1 The Kogod Center on Aging and Division of Endocrinology, Mayo Clinic, Rochester, MN, USA. Electronic address: khosla.sundeep@mayo.edu.
2 Department of Epidemiology, University of Alabama at Birmingham, Birmingham, AL, USA.
3 American Society for Bone and Mineral Research, Washington, DC, USA.
4 Hinda and Arthur Marcus Institute for Aging Research, Hebrew SeniorLife, Department of Medicine Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.