Affiliation: | 1. Division of Endocrinology, Stanford University School of Medicine, Stanford, CA, USA;2. Division of Endocrinology, Stanford University School of Medicine, Stanford, CA, USA Veterans Affairs Palo Alto Health Care System, Geriatric Research Education and Clinical Center, Palo Alto, CA, USA Department of Orthopedics, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China |