DEXA scans of the spine, hip, and forearm will be done at Baseline visit, 6-month, 12-month, 18-month, and 24-month follow-up visits. DEXA scan of the spine, hip, and forearm takes approximately 20 minutes to complete. To assess incident vertebral and non-vertebral fractures, lateral thoracic and lumbar spine evaluation using Instant Vertebral Assessment [IVA] will be done at Baseline, 12-month, and 24-month follow-up visits.