[1] Univ Kansas, Sch Med, Dept Populat Hlth, Kansas City, KS 66103 USA
[2] Dartmouth Coll, Dartmouth Inst Hlth Policy & Clin Practice, Geisel Sch Med, Lebanon, NH USA
[3] Univ Toulouse, CERPOP, Inserm, UPS, Toulouse, France
[4] Unisante, Ctr Univ Med Gen & Sante Publ, Lausanne, Switzerland
[5] NYU Langone Long Isl, Dept Obstet & Gynecol, Mineola, NY USA
[6] Mayo Clin, Dept Obstet & Gynecol, Rochester, MN USA
[7] Dartmouth Hitchcock Hlth, Dept Obstet & Gynecol, Lebanon, NH USA
[8] Yale Sch Med, Dept Obstet Gynecol & Reprod Sci, New Haven, CT USA
[9] Harvard Med Sch, Brigham & Womens Hosp, Dept Obstet Gynecol & Reprod Biol, Boston, MA USA
[10] Washington Univ, Sch Med, Dept Surg, Div Publ Hlth Sci, St Louis, MO USA
[11] Rutgers Hlth, Rutgers Inst Nicotine & Tobacco Studies, New Brunswick, NJ USA
[12] Amsterdam UMC, Dept Obstet & Gynaecol, Amsterdam, Netherlands
[13] Canc Ctr Amsterdam, Gynaecol Oncol, Amsterdam, Netherlands