1. From the Duke University Medical Center, Durham, NC (M.G.K., P.S.D., L.W.J.); Cross Cancer Institute, Edmonton, AB, Canada (J.R.M.); Hospital General Universitario Gregorio Maranon, Universidad Complutense, Madrid, Spain (M.M.); NASA Johnson Space Center, Houston, TX (J.M.S.); and Massachusetts General Hospital, Harvard Medical School, Boston (M.S.-C.).