1. Weill Cornell Medicine, New York, New York (A.D.T.)
2. Memorial Sloan Kettering Cancer Center, New York, New York (R.L.G., E.B.E., C.L.A., J.C.D.)
3. New York University Langone Medical Center, New York, New York (W.C.H.)
4. University of Washington, Seattle, Washington (S.W.K.)