[1] Broad Inst MIT & Harvard, Cambridge, MA 02142 USA
[2] MIT, McGovern Inst, Cambridge, MA 02139 USA
[3] Harvard MIT Program Hlth Sci & Technol, Cambridge, MA 02142 USA
[4] Harvard Univ, Cambridge, MA 02138 USA
[5] Univ Utah, Sch Med, Howard Hughes Med Inst, Dept Oncol Sci, Salt Lake City, UT 84112 USA
[6] Univ Utah, Sch Med, Howard Hughes Med Inst, Huntsman Canc Inst, Salt Lake City, UT 84112 USA
[7] Massachusetts Gen Hosp, Dept Psychiat, Boston, MA 02114 USA
[8] Populat Council, Ctr Biomed Res, Mary M Wohlford Lab Male Contracept Res, New York, NY 10065 USA
[9] Harvard Univ, Dept Stem Cell & Regenerat Biol, Cambridge, MA 02138 USA