1. Department of Medicine, University of Southern California, Keck School of Medicine, Los Angeles (L.A.S.).
2. Department of Medicine, Cleveland Clinic, OH (N.V.).
3. Northwell Health, Manhasset, NY (L.M.E.).
4. Heritage Valley Health System, Beaver, PA (L.I.G.).
5. Department of Medicine, University of Pennsylvania, Philadelphia (A.E.E.).