[1] Burroughs Wellcome Fund, Res Triangle Pk, NC 27709 USA
[2] Harvard Univ, Dept Med, Boston, MA 02115 USA
[3] Massachusetts Gen Hosp, Clin Res Program, Boston, MA 02114 USA
[4] Massachusetts Gen Hosp, Reprod Endocrine Unit, Boston, MA 02114 USA
[5] Ctr Watch, Boston, MA USA
[6] Yale Univ, Sch Med, New Haven, CT USA
[7] Blue Shield Calif, Calif Publ Employees Retirement Syst, San Francisco, CA USA
[8] Robert Wood Johnson Fdn, Princeton, NJ 08540 USA
[9] Univ Penn, MEDSA, Philadelphia, PA 19104 USA
[10] Univ Penn, Dept Med, Philadelphia, PA 19104 USA
[11] Columbia Univ, Dept Med Informat, New York, NY USA
[12] Columbia Univ, Sch Nursing, New York, NY USA
[13] NYU, Sch Med, New York, NY USA
[14] Amer Federat Med Res Fdn, New York, NY USA
[15] Sloan Kettering Inst, Mol Pharmacol & Chem Program, New York, NY USA
[16] Sloan Kettering Inst, Leukemia Serv, New York, NY USA
[17] Univ N Carolina, Sch Publ Hlth, Chapel Hill, NC USA
[18] Univ Arkansas, Coll Med, Little Rock, AR 72205 USA
[19] Univ So Calif, Sch Dent, Los Angeles, CA 90089 USA
[20] Cedars Sinai Med Ctr, Dept Pediat, Los Angeles, CA 90048 USA
[21] Cedars Sinai Med Ctr, Ctr Med Genet Birth Defects, Los Angeles, CA 90048 USA
[22] Johns Hopkins Univ, Sch Med, Dept Med, Baltimore, MD 21205 USA
[23] Johns Hopkins Univ, Sch Med, Clin Res Unit, Baltimore, MD USA
[24] Johnson & Johnson, Janssen Res Fdn, Global CNS Analgesia Clin Res & Dev, Titusville, NJ USA
[25] Johnson & Johnson, Corp & Community Relat, Med Affairs, New Brunswick, NJ USA
[26] Blue Cross Blue Shield Assoc, Chicago, IL USA