1. Johns Hopkins University School of Medicine, Baltimore, Maryland (C.M.D., M.G.B., D.M.B., M.A.C., G.M., N.B., R.W., A.R., F.F.N., D.O., D.L.S., M.S., N.M.D.)
2. Johns Hopkins University School of Medicine and Johns Hopkins University, Baltimore, Maryland (J.S.)