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Clinical Trials for Vitamin D Deficiency

• The Effect of Vitamin D3 Therapy on Vitamin D Status in Pregnant Women With Vitamin D Deficient and Insufficient
• The Effectiveness of Vitamin D Supplementation in Patients With End-stage Knee Osteoarthritis
• Oral Vitamin D Supplementation Prevent Peritoneal Dialysis-related Peritonitis
• Vit D and Peripheral Neuropathy in Taxane Naive Patients
• Effects of High Intensity Statin Therapy on Steroid Hormones and Vitamin D in Type 2 Diabetic Men
• Beneficial Effects of Vitamin D Combined With Oral Iron Supplementation in Patients With Chronic Heart Failure and Iron Deficiency
• Peripheral Immunological Effects of High-dose Vitamin D Treatment in Healthy Subjects
• Effects of Stoss Therapy of Vitamin D3 on Peri-operative Outcomes in Patients Receiving General Surgery
• Effect of Single High Dose of Cholecalciferol on Serum Metabolites of Vitamin D
• A Study on Prevention Strategies for CKD-SHPT and Related Complications Based on General Vitamin D Supplementation
• Phase 3 Safety and Efficacy Study of CTAP101 Extended-release Capsules in Children With Secondary Hyperparathyroidism
• Vitamin D, Oxidative Stress and Inflammation in Hemodialysis
• Impact of Vitamin D3 Supplementation in Non-Sjogren Dry Eye Patients With Low Serum Vitamin D Level
• Calcitriol Supplementation in COVID-19 Patients
• The Effect of Vitamin D3 Therapy in Post Menopausal Women and Assessment of Changes in Bone Mineral Density After Orally Vitamin D3 Administration
• Effect of Vitamin D and Denosumab on Bone Remodelling in Women With Postmenopausal Osteoporosis
• Synergistic Effect of Vitamin D Supplementation in Patients With Vitiligo and Vitamin D Deficiency
• Frequency of Hyperparathyroidism in Postmenopausal Osteoporosis and Its Treatment
• Antiresorptive Effect of Treatment With Risedronate and Vitamin D in Postmenopausal Patients
• High-Dose Vitamin D3 Supplementation in the Treatment of Human Immune Deficiency Virus Patients Trial
• Efficacy of Intensive Cholecalciferol Monitoring and Supplementation on Serum vitD Levels in Pediatric Patients With CF
• Effect of Vitamin D Supplement on Disease Activity in SLE
• Prevention of Postoperative Hypocalcemia of Oral Vitamin D Supplementation Before Total Thyroidectomy
• Vitamin D Effect on A Disintegrin-like And Metalloprotease Thrombospondin1 Motif 13& Interleukin 6 in Leukemia
• Vitamin D Status and Bone Metabolism Status in Children With Congenital Epidermolysis Bullosa
• Vitamin D Supplementation and Improvement of PCOS Therapy and IVF Outcomes in Infertile Saudi Women
• Vitamin D Deficiency in Adults Following a Major Burn Injury
• Optimization of Blood 25-hydroxy-vitamin D Levels in African Americans
• Effect of Vitamin D Oral Supplementation in Poly Csytic Ovarian Women Resistant to Clomiphene Citrate
• 30000 IU Per Week Vitamin D Treatment in PCOS Patients
• The Role of Vitamin D Supplementation on Pain in Women With Primary Dysmenorrhea and Hypovitaminosis D
• 12 Weeks Vitamin D Supplementation and Physical Activity in PD Patients With DBS
• Efficacy and Safety of Calcifediol vs Placebo in Subjects With Vitamin D Deficiency
• Impact of Vitamin D Supplementation on the Rate of Pathologic Complete Response in Vitamin D Deficient Patients
• Vitamin D Supplementation in Individuals With a Chronic Spinal Cord Injury
• Mothers' Own Milk Optimization for Preterm Infants Project (MoMO PIP) Pilot Study
• Vitamin D Supplementation in RNA-seq Profiles of Single-core Prostate Samples, Among Veterans
• Effect of Vitamin d Deficiency in Chronic Rhinosinusitis With Nasal Polyposis
• High Dose Vitamin-D Substitution in Patients With COVID-19: a Randomized Controlled, Multi Center Study
• Vitamin D Supplementation in the Prevention and Mitigation of COVID-19 Infection
• Reducing Asymptomatic Infection With Vitamin D in Coronavirus Disease
• The Efficacy and the Safety of Vitamin D3 30,000 IU for Loading Dose Schedules
• Does Supplementing Vitamin D Deficiency Affect Fusion Healing Rates in Elective Foot and Ankle Surgery?
• The Effect of Preoperative Oral Dexamethasone Supplementation on the Outcome of Thyroidectomised Patients.
• High vs Low Dose Vitamin D in Patients With Diabetic Peripheral Neuropathy
• The LEAD COVID-19 Trial: Low-risk, Early Aspirin and Vitamin D to Reduce COVID-19 Hospitalizations
• Evaluation of the Clinical and Psychological Impact of Vitamin D Replacement in Adolescent Females at Risk for Polycystic Ovarian Syndrome (PCOS)
• Can Vitamin D Reduce Heart Muscle Damage After Bypass Surgery?
• Effect of Aerobic Interval Training With Vitamin D Supplement on Functional Capacity and Perceived Myalgia
• Observation of the Effect of Vitamin D Supplementation on Chronic Course of Patients With Ulcerative Colitis Based on Vitamin D Receptor Fok I Gene Polymorphism
• Exploring the Effects of Vitamin D Supplementation on the Chronic Course of Patients With Crohn's Disease With Vitamin D Deficiency
• A Retrospective Analysis: the Influence of Caltrate Supplement on the Effect of Mesalazine in Ulcerative Colitis
• Exploring the Effects of Caltrate Supplement on the Chronic Course of Crohn's Disease Patients With Vitamin D Deficiency
• Effect of Vitamin D Supplementation on Improvement of Pneumonic Children
• Relationship Between Serum Vitamin D Levels and Musculoskeletal Adverse Effects in Patients Using Isotretinoin
• Effect of Escalating Oral Vitamin D Replacement on HOMA-IR in Vitamin D Deficient Type 2 Diabetics
• Daily Vitamin D for Sickle-cell Respiratory Complications
• the Effect of Vitamin D in Crohn's Disease
• Treatment of Vitamin D Deficiency With Large Bolus Cholecalciferol
• Vitamin D in Fatty Liver Disease
• Vitamin D for Polycystic Ovary Syndrome Clomiphene Resistant Women
• A Trial to Evaluate the Effect of Vitamin D Supplementation in Patients With Chronic Urticaria
• Vitamin D and Polycystic Ovarian Syndrome
• Vitamin D Can Increase Pathological Response of the Breast Cancer Patients Treated With Neoadjuvant Therapy
• Vitamin D 24'000 IU for Oral Intermittent Supplementation
• The Effect of Vitamin D on Fertility
• Effects of Fat-soluble Vitamins Supplementation on Common Complications and Neural Development in Very Low Birth Weight Infants
• The Effect of Calcium and Vitamin D Supplements on Metabolic and Hormonal Disturbances in Polycystic Ovary Syndrome Patients
• Rapid Normalization of Vitamin D Deficiency in PICU
• Cholecalciferol on Hemodialysis Patients
• Safety, Efficacy, PK and PD of CTAP101 (Calcifediol) ER Capsules for SHPT in HD Patients VDI
• Repeated-dose Safety, Efficacy, Pharmacokinetic and Pharmacodynamic of CTAP101, Immediate-release Calcifediol, High-dose Cholecalciferol, and Paricalcitol Plus Low-dose Cholecalciferol in Patients With Secondary Hyperparathyroidism, Chronic Kidney D
• Association Between Vitamin D and the Risk of Uterine Fibroids
• Association Between Vitamin D and the Development of Uterine Fibroids
• Vitamin D Supplementation to Prevent Vitamin D Deficiency for Children With Epilepsy
• Changes in Serum Vitamin D Level After Different Loading Doses of Cholecalciferol
• Vitamine D in Drug Resistant Epilepsy
• High-dose Vitamin D3 in Pancreas Cancer
• Vitamin D Deficiency Treatment Outcomes After Non-ST-Segment Elevation Myocardial Infarction
• Study of the Effect of Calcifediol Supplementation on Cardiopathic Patients Undergoing Major Orthopedic Surgery (Vitamina D).
• 25-Hydroxyvitamin D Pharmacokinetic Study
• Impact of Vitamin D Supplementation in Patients With Multiple Sclerosis
• Metformin, Vitamin D, and Depression in Polycystic Ovary Syndrome (PCOS) Trial
• Valuation of Efficacy and Safety of Vitamin D3 Use in 80 Women Diagnosed With Fibromyalgia. Using FIQ Score and VAS.
• Impact of Correction of Vitamin D Deficiency in Oxidative Stress in Patients With Prediabetes (VICOX)
• Effect of Vitamin D Replacement on Bone Healing in Mini-dental Implants
• The Effect of Vitamin D Supplementation on Psoriasis Severity
• Vitamin D3 Treatment and Homocysteine Concentrations Among Overweight Reproductive Women
• Importance of Dosing Regimen for the Effect of Vitamin D Supplementation
• Effect of High-Dose Vitamin D3 in Smokers and Non-Smokers With and Without HIV
• The Effects of Oral Vitamin D Supplementation on the Prevention of Peritoneal Dialysis-related Peritonitis
• A Prospective, Single-centre, Open-label Study to Confirm the Efficacy and Safety of Vitamin D3 B.O.N. Intramuscular Injection in Adults With Vitamin D Deficiency
• Optimal Doses of Ergocalciferol Supplementation for Treatment of Hypovitaminosis D in Adults
• The Effect of Supplementation of Vitamin D Deficiency in Older People With Acute Hip Fracture:
• Vitamin D Supplementation on Metabolic Syndrome Indicators Among Older Adults, Alborz Province, Iran
• The VITDALIZE Study: Effect of High-dose Vitamin D3 on 28-day Mortality in Adult Critically Ill Patients
• Effects of Vitamin D Supplementation on Strength, Bone Density, and Injury Risk in Collegiate Athletes
• Oral Vitamin D Substitution Weekly or Monthly and Adherence
• Effect of Vitamin D3 Supplementation in Pregnancy on Risk of Pre-eclampsia
• Vitamin D to Improve Outcomes by Leveraging Early Treatment
• Blood Pressure in Blacks and Calcium (BBC) and Vitamin D Study
• Vitamin D and Bone Homeostasis in Ortho Polytrauma Patients
• Cholecalciferol Supplementation in Restless Leg Syndrome in Patients With Chronic Kidney Disease
• 'Palliative-D' Vitamin D to Palliative Cancer Patients
• Is Vitamin D2 Treatment-associated Decrease in 25(OH)D3 Level a Reciprocal Phenomena?
• Vitamin D Supplementation and Neurocognition
• Multi-dose Vitamin D Supplementation in Preterm Infants
• Vitamin D and Physical Performance Before and After Intervention and Birth Outcome in Pregnant Somali and Swedish Women
• Effect of Three Different Doses of Oral Cholecalciferol on 25-Hydroxyvitamin D Changes Among Epilepsy Patients With Hypovitaminosis D
• Hypovitaminosis D in Neurocritical Patients
• High Dose Vitamin D Replacement in Patients Undergoing Hematopoietic Stem Cell Transplantation
• Cholecalciferol Supplementation in Critically Ill Patients With Severe Vitamin D Deficiency.
• Efficacy of Calcifediol Supplementation in Asthma Control in Asthmatic Patients With Vitamin D Deficiency (ACViD)
• To Study the Nutri-Genomic Response of Vit-D Supplementation in African-Americans
• The GLOBAL Vitamin D Study. A Genomic, Transcriptomic, Proteomic and Metabolomic Approach
• The Effect of Vitamin D Supplementation on Cardiovascular Risk Factors
• Topical Delivery of Vitamin D3 as Vitamin D Supplementation
• Vitamin D Levels Following Topical Application of Vitamin D Ointment
• Vitamin D Deficiency and Asthma Exacerbation
• Correction of Vitamin D Deficiency and Its Effect on Ovulation Induction in Women With PCOS (VIDEO): A Feasibility RCT
• Safety, Efficacy, and Feasibility of High-dose Cholecalciferol in Pediatric Patients With Cystic Fibrosis
• Effects of Cholecalciferol on Osteoprotegerin Levels in Patients on Peritoneal Dialysis
• Effect of Vitamin D3 Supplementation on Muscle Mass in ICU Patient
• Physiologic Interactions Between the Adrenal- and the Parathyroid Glands
• The Effects of Vitamin D on Angiogenic Factors in Women With Polycystic Ovary Syndrome
• Calcichew D3 Preference Study in Participants Eligible for Calcium and Vitamin D Supplementation.
• Rapid Normalization of Vitamin D in Critically Ill Children: A Phase II Dose Evaluation Randomized Controlled Trial
• A Prospective, Multi-center Study to Evaluate the Efficacy and Safety of Vitamin D3 B.O.N. Intramuscular Injection in Adults With Vitamin D Deficiency
• Efficacy Of Ergocalciferol In Adults According To BMI
• Efficacy of Vitamin D Therapy on Glucose Homeostasis in Obese Adolescents
• Determination of Vitamin D Dose to Maintain Sufficiency Amongst Indian and Malay Women in the Tropics
• An Evaluation of the Effect of Vitamin D Supplementation on the Cognitive Function of Older Subjects With Low Levels of This Vitamin
• Periodontal and Cardiometabolic Responses to Vitamin D Intervention in African Americans With Periodontal Disease
• The Effect of Vitamin D Supplementation Among Overweight Jordanian Women With Polycystic Ovary Syndrome (PCOS)
• Vitamin D Supplementation During Lactation
• Extension Study of CTAP101-CL-3001 or CTAP101-CL-3002
• Effect of an Inhibitor of Cholesterol Absorption on Vitamin D Levels
• The Effect of Vitamin D Supplementation on HIV-associated Platelet Hyperreactivity
• Trial of High Dose Vitamin D in Patient's With Crohn's Disease
• Efficacy of the Dose Regimen of Oral Vitamin D 50,000 IU in the Treatment of Vitamin D Deficiency
• Dosage Calculation for Vitamin D Treatment
• Effect of Oral Daily Supplementation With 400 IU Vs 200 IU of Vitamin D in Term Healthy Neonates
• Correction of Vitamin D Levels and Its Effect on Insulin Resistance and Weight Gain in Obese Youth
• Comparison of Changes in Serum 25(OH)D Concentrations Following Vitamin D Supplementation With Chewable Tablets Versus Pills
• Vitamin D Deficiency and Replacement on Pulmonary and Endocrine Function in SCI
• Effects of Vitamin D3 Versus 25OHD3 on Mineral Metabolism and Immune Function
• Controlled, Randomized, Four-arm Comparative, Open Label, Multi-centric Clinical Trial to Compare the Efficacy and Safety Parameters of the Once-a-week or Once-a-month Administered 7000 IU, or 30000 IU Vitamin D (Cholecalciferol) to a 1000 IU Dosage
• Vitamin D in Pediatric Asthma: a Randomized Controlled Open-label Pilot Trial
• Effect of Vitamin D Treatment on Fatigue
• Optimizing Treatment Programs for Chronic Kidney Disease-mineral and Bone Disorder and Malnutrition
• The Role of Vitamin D in the Pathophysiology of Chronic Failure
• Vitamin D Deficiency in Elderly African American Women in Central Texas
• Vitamin D Supplementation and the Immune Response
• Effects of Treating Vitamin D Deficiency in Poorly Controlled Type 2 Diabetes
• Immunologic Action of a Single Dose Cholecalciferol
• Treatment Study of Vitamin D Deficiency in Adolescents
• Effects of Vitamin D on Inflammation in Liver Disease
• Vitamin D Supplementation in Patients With Diabetes Mellitus Type 2
• Vitamin D Treatment, Pharmacogenetics and Glucose Metabolism
• Safety and Efficacy of CTAP101 to Treat Secondary Hyperparathyroidism in Stage 3 or 4 CKD and Vitamin D Insufficiency
• The Impact of Severe Vitamin D Deficiency and Its Correction on Bone Mineral Density (BMD) in Postmenopausal Women
• High Dose Preoperative Cholecalciferol Supplementation and Perioperative Vitamin D Status
• Effect of Vitamin D Supplementation on Coronary Calcification and Parathyroid Hormone in CKD Patients
• Vitamin D Supplementation in HIV-infected Youth
• Safety and Efficacy of CTAP101 to Treat Secondary Hyperparathyroidism in Stage 3 or 4 CKD and Vitamin D Insufficiency
• Human Pharmacology Trial of Calcium-vitamin D3 Tablet in Healthy Participants
• Vitamin D3 Supplementation for Heart Failure Patients
• Efficacy of Vitamin D2 to Treat Chronic Kidney Disease Mineral and Bone Disorder
• Vitamin D Deficiency and Postoperative Hypocalcemia
• Effect of Omega-3 Fatty Acid on Vitamin D Activation
• The Effect of Vitamin D Repletion in Patients With Hepatocellular Carcinoma on the Orthotopic Liver Transplant List
• Vitamin D Repletion in Coronary Artery Disease
• Is Treatment of Vitamin D Deficiency Associated With Resolution of Statin-Induced Muscular Symptoms
• Open Label Clinical Trial of Vitamin D in Children With Autism
• Effects of Vitamin D on Beta Cell Function and Insulin Sensitivity in Pre-diabetes and Diabetes Mellitus Type 2
• Bioavailability and Biological Effects of Vitamin D2 Contained in Mushroom
• Study of Vitamin D Supplementation Tailored to Vitamin D Deficiency in Breast Cancer Patients
• Effects of Cholecalciferol Supplementation in Patients With Chronic Heart Failure and LOw vITamind D Levels
• Vitamin D for Sickle-cell Respiratory Complications
• Oral Cholecalciferol in Prevention of Type 2 Diabetes Mellitus
• Determination of Effective Vitamin D Replacement and Monitoring Strategies in Vitamin D Deficiency State
• Treatment of Vitamin D Deficiency in Patients With Rheumatoid Arthritis
• Vitamin D and Its Affect on Growth Rates and Bone Mineral Density Until Age 5
• Vitamin Deficiency in Immigrants, a Treatment Study
• The Immune and Clinical Impacts of Vitamin D in Patients With Chronic Musculo-skeletal Pain
• Vitamin D Supplementation in Systemic Lupus Erythematosus
• Rapid vs Maintenance Vitamin D Supplementation in Deficient Children With Asthma to Prevent Exacerbations.
• Vitamin D Replacement in Insulin Resistant South Asians
• Trial to Assess Vitamin D Requirements in Lactating Women
• Efficacy of Vitamin D3 for the Treatment of Psoriatic Patients With Vitamin D Deficiency and Insufficiency
• Vitamin D Deficiency and Atopic Dermatitis
• Sustainability of Vitamin D Levels After Repletion With Ergocalciferol In Chronic Kidney Disease Stage 5D
• Vitamin D Repletion in Primary Hyperparathyroidism
• Vitamin D Repletion in Stone Formers With Hypercalciuria
• Vitamin D Supplementation in Chronic Stable Heart Failure
• The Effect of Vitamin D Replacement on Airway Reactivity, Allergy and Inflammatory Mediators in Exhaled Breath Condensate in Vitamin D Deficient Asthmatic Children
• Effect of Vitamin D Replacement on Insulin Sensitivity
• DAYLIGHT: Vitamin D Therapy in Individuals at High Risk of Hypertension
• Hemodialysis Vitamin D Pilot
• Vitamin D and Muscle Strength and Surface (Electromyography) EMG
• Vitamin D Supplementation in CAD and Postchallenge Hyperglycemia
• Impact of Vitamin D Repletion in Hemodialysis Patients
• Magnitude of Changes in 25 OH Vitamin D3 Levels After Vitamin D3 Supplementation
• Effect of Vitamin D Oral Supplements on 25 OH Vitamin D Levels
• Does Vitamin D Improve Glycemic Control in Type II DM?
• Effect of Vitamin D Replacement During Winter Months in Patients With Hypertension
• Vitamin D and Inflammatory Markers of Cardiovascular Disease in African Americans With Type 2 Diabetes
• VITdAL@ICU - Correction of Vitamin D Deficiency in Critically Ill Patients
• Vitamin D in Pregnancy and Lactation
• Calcium, Vitamin D and Metformin to Treat Insulin Resistance in Obese African American Adolescent Females
• Study of Vitamin D and Effect on Heart Disease and Insulin Resistance
• Vitamin D Supplementation as Non-toxic Immunomodulation in Children With Crohn's Disease
• Effects of Vitamin D Supplementation in Obesity
• Prevalence of Vitamin D Deficiency in Type 1 Diabetes Mellitus and Effect of Supplementation on Insulin Requirements
• hCAP18 Levels and Vitamin D Deficiency in Chronic Kidney Disease
• Vitamin D Status in Males in Jerusalem Area and Its Correlation to Parathyroid Hormone (PTH) Level and Bone Mineral Density
• Safety and Immunologic Effect of Low Dose Versus High Dose Vitamin D3 in Multiple Sclerosis
• Vitamin D Treatment to Patients Suffering From Chronic Pain and Vitamin D Hypovitaminosis
• Effect of Vitamin D Supplement on Inflammation Markers in High-Risk Cardiovascular Patients With Chronic Kidney Disease
• Vitamin D Supplementation in Psychiatric Illnesses
• Vitamin D Supplementation Requirement in Obese Subjects
• Diabetes Intervention Trial With Vitamin D in Subjects of Nordic and Sub-Indian Ethnicity
• Vitamin D Deficiency in Patients With Hypertension
• Vitamin D and Chronic Renal Insufficiency
• Vitamin D, Blood Pressure, Lipids, Infection and Depression
• Vitamin D Deficiency in Chronic Kidney Disease (CKD) Patients
• The Effect of Vitamin D on Urinary Calcium Excretion in Kidney Stone Formers With High Urinary Calcium
• Effect of Vitamin D3 on Vascular Function
• Study of Vitamin D3 Supplementation in Patients With Chronic Kidney Disease
• Vitamin D, Chronic Kidney Disease (CKD) and the Microcirculation
• Vitamin D3 Substitution in Vitamin D Deficient Kidney Transplant Recipients
• Vitamin D and Coronary Calcification Study
• Health Benefits of Vitamin D and Calcium in Women With PCOS (Polycystic Ovarian Syndrome)
• hCAP18 Levels and Vitamin D Deficiency in Healthy Subjects
• Vitamin D, Insulin Resistance, and Cardiovascular Disease
• Cholecalciferol Supplementation, Muscle Strength
• Effect of Vitamin D Treatment in Primary Hyperparathyroidism
• Controlled Trial of Prenatal Vitamin D3 Supplementation to Prevent Vitamin D Deficiency in Mothers and Their Infants
• High-Dose Vitamin D Deficiency in Burn Injury
• Effects of Vitamin D on Renin Expression in Hypertensive Patients
• Does Treatment of Hypovitaminosis D Increase Calcium Absorption?
• Penicillamine Chelation for Children With Lead Poisoning
• Kabul Vitamin D Supplementation Trial
• The Effect of Calcium and Vitamin D in Patients With Heart Failure
• Vitamin D Deficiency, Insulin Resistance and FGF-23
• The Pharmacokinetics of a Single Large Dose of Vitamin D3
• Treatment of Secondary Hyperparathyroidism in the Uremic Patient
• Cholecalciferol (Vitamin D3) Therapy in Chronic Kidney Disease (CKD) Subjects
• Vitamin D Deficiency, Muscle Pain, Joint Pain, and Joint Stiffness in Postmenopausal Women Receiving Letrozole For Stage I-III Breast Cancer
• Effect of Vitamin D Supplementation on Health of Low Birth Weight Infants
• Vitamin D Status of Pregnant Women and Their Children in Eau Claire, South Carolina
• Establishing the Vitamin D Requirements During Lactation
• Vitamin D Dose-Response Study to Establish Dietary Requirements in Infants
• Optimizing Vitamin D Nutrition in Healthy Adults
• The Prevalence of Vitamin D Deficiency and Effects of Vitamin D Supplementation in HIV-1 Infected Patients
• Evaluation of Vitamin D Requirements During Pregnancy
• Characterization of Hyperparathyroidism and Vitamin D Deficiency in Obesity
• Vitamin D Deficiency Causes Immune Dysfunction and Enables or Perpetuates the Development of Rheumatoid Arthritis
• A Study to Assess the Effectiveness of an Investigational Drug in Elderly Subjects With Low Vitamin D Levels (0822A-009)
• Vitamin D Administration in the Nursing Home
• A Study of MK0217A and Dietary Supplement in Men and Postmenopausal Women With Osteoporosis (0217A-227)
• A Study to Evaluate the Safety, Tolerability, and Efficacy of an Investigational Drug and Dietary Supplement in Men and Postmenopausal Women With Osteoporosis (0217A-227)