1. From the Department of Global Public Health and Primary Care (J.R., K.B., M.C., J.A.T., M.S., A.A.M., J.I., T.R.), University of Bergen, Norway; Department of Nutrition (K.B., M.C.), and Department of Epidemiology (K.B.), Harvard T.H. Chan School of Public Health; and Precision Neurology Program (C.R.S., T.R.), and APDA Center for Advanced Parkinson Research (C.R.S.), Harvard Medical School, Brigham and Women's Hospital, Boston, MA.