1. University of California, San Francisco, and San Francisco Veterans Affairs Medical Center, San Francisco, California (M.G., M.A., J.F., S.K.)
2. The Wright Center for Graduate Medical Education, Scranton, Pennsylvania (D.R.)
3. Northern California Institute for Research and Education, San Francisco Veterans Affairs Medical Center, San Francisco, California (M.V.)
4. Memorial Sloan Kettering Cancer Center, New York, New York (D.K.)
5. University of Toronto, Toronto, Ontario, Canada (P.C.A.)