UD 003 Clinical questions to be addressed: Use of probiotics to prevent antibiotic-associated diarrhea The value of repeat bone mineral density measurement in predicting fractures Bone densitometry followed by treatment of osteoporosis in older men Hydrotherapy versus Tai Chi in management of osteoarthritis Post menopausal hormone therapy and cardiovascular risk by age and years since menopause Rosuvastatin in older patients with systolic heart failure