[1] Univ Calif San Diego, Moores Canc Ctr, Dept 0901, Div Reprod Endocrinol & Infertil, La Jolla, CA 92093 USA
[2] Univ So Calif, Div Reprod Endocrinol & Infertil, Los Angeles, CA USA
[3] Univ Penn, Sch Med, Ctr Clin Epidemiol & Biostat, Philadelphia, PA 19104 USA
[4] Univ Penn, Sch Med, Div Reprod Endocrinol & Infertil, Philadelphia, PA 19104 USA
[5] Univ Penn, Sch Med, Rowan Breast Ctr, Abramson Canc Ctr, Philadelphia, PA 19104 USA