1. From the Department of Laboratory Medicine and Pathology (N.P., B.R.C., K.M.B.), School of Medicine, University of Minnesota, Minneapolis; Division of Rheumatology (K.P.L.), Immunology, and Allergy, Brigham and Women's Hospital; Department of Biomedical Informatics (K.P.L.), Harvard Medical School; Division of Data Sciences (K.P.L.), VA Boston Healthcare System, MA; Department of Neurology (J.A.), University of Minnesota Medical School; and Department of Neurology (J.A.), Minneapolis Veterans...