1 The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, MD 20817, United States.
2 The Center for Rehabilitation Sciences Research, Department of Physical Medicine and Rehabilitation, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, United States.
3 Yale University School of Medicine, Department of Biomedical Informatics & Data Science, New Haven, CT 06520, United States.
4 VA Connecticut Healthcare Systems, United States Department of Veteran Affairs, New Haven, CT 06516, United States.
5 Geriatrics Research Education and Clinical Care Service, Department of Veterans Affairs, Tennessee Valley VA Medical Center, Nashville, TN 37212, United States.
6 Department of Biomedical Informatics, Vanderbilt University Medical Center, Nashville, TN 37232, United States.
7 Department of Biostatistics, Vanderbilt University Medical Center, Nashville, TN 37232, United States.
8 Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, United States.
9 Critical Path Institute, Tucson, AZ 85718, United States.