1. University of Michigan Medical School and VA Ann Arbor Health System, Ann Arbor, Michigan (V.M.V., M.A.R., V.C.)
2. University of Michigan Medical School, Ann Arbor, Michigan (S.A.F., A.S., A.C., E.M., S.B., T.N.G.)
3. St. Joseph Mercy Health System, Ann Arbor, Michigan (A.N.M.)
4. Centers for Disease Control and Prevention, Atlanta, Georgia (A.S.)
5. Michigan Medicine, Ann Arbor, Michigan (J.N.)
6. Henry Ford Hospital, Detroit, Michigan (S.K.)
7. Hurley Medical Center, Flint, Michigan, and College of Human Medicine, Michigan State University, East Lansing, Michigan (D.O.)
8. Beaumont Hospital, Dearborn, Michigan (R.T., L.H.)