1. Division of Endocrinology/Metabolic Bone Disease Service, Hospital for Special Surgery , New York, NY 10021 , USA
2. Department of Radiology and Imaging—MRI, Hospital for Special Surgery , New York, NY 10021 , USA
3. Spine Service, Hospital for Special Surgery , New York, NY 10021 , USA
4. Mailman School of Public Health and Institute of Human Nutrition, Columbia University , New York, NY 10032 , USA