1 Center for Transformative Geriatrics Research, Division of Geriatric Medicine and Gerontology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.
2 Division of Clinical Trials and Biostatistics, Department of Quantitative Health Sciences, Mayo Clinic, Rochester, Minnesota, USA.
3 Division of Epidemiology, Department of Quantitative Health Sciences, Mayo Clinic, Rochester, Minnesota, USA.
4 Robert D. and Patricia E. Kern Center for the Science of Health Care Delivery, Mayo Clinic, Rochester, Minnesota, USA.
5 Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA.
6 Department of Neurology, Mayo Clinic, Rochester, Minnesota, USA.
7 Women's Health Research Center, Mayo Clinic, Rochester, Minnesota, USA.