1. From the Division of Nephrology, Salem Veterans Affairs Medical Center, Salem, VA (C.P.K., S.M.M.); Division of Nephrology, University of Virginia, Charlottesville, VA (C.P.K., S.M.M., J.Z.M.); Veterans Affairs Informatics and Computing Infrastructure, Salt Lake City, UT (E.H.L.); Salem Research Institute, Salem, VA (J.L.L.); Harold Simmons Center for Chronic Disease Research and Epidemiology, Los Angeles Biomedical Research Institute at Harbor–UCLA Medical Center, Torrance, CA (M.Z.M., K.K.-Z.);...