[1] Northwestern Univ, Dept Obstet & Gynecol, Feinberg Sch Med, Chicago, IL USA
[2] Northwestern Univ, Dept Psychiat, Feinberg Sch Med, Chicago, IL USA
[3] Univ Cent Florida, Dept Obstet & Gynecol, Coll Med, Orlando, FL USA
[4] Wright State Univ, Dept Obstet & Gynecol, Boonshoft Sch Med, Dayton, OH USA
[5] Shanghai Jiao Tong Univ, Renji Hosp, Ctr Reprod Med, Sch Med, Shanghai, Peoples R China
[6] Northwestern Univ, Feinberg Sch Med, Dept Obstet & Gynecol, 676 N St Clair Suite 1845, Chicago, IL 60611 USA
[7] Northwestern Univ, Dept Psychiat, Feinberg Sch Med, 676 N St Clair Suite 1845, Chicago, IL 60611 USA