1. University of California, San Francisco, San Francisco, California (G.M.M., E.V., S.J., V.Y., G.N., E.P.G., J.D.M., R.J.L., B.K.L., Z.H.T., V.V., J.E.O., M.M.S., H.H., R.G., S.F., E.L., C.F., K.O., R.F., J.A.H.)
2. Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania (I.R.W.).