[1] Univ Ottawa, Div Hematol, Ottawa Blood Dis Ctr, Ottawa, ON, Canada
[2] Univ Ottawa, Dept Med, Ottawa, ON, Canada
[3] Ottawa Gen Hosp, Ottawa, ON K1H 8L6, Canada
[4] Ottawa Gen Hosp, Res Inst, Clin Epidemiol Program, Ottawa, ON K1H 8L6, Canada
[5] Univ Turku, Dept Med, Turku, Finland
[6] Turku Univ Hosp, FIN-20520 Turku, Finland
[7] Osped Maggiore Policlin, Fdn Ist Ricovero & Cura Carattere Sci Ca Granda, A Bianchi Bonomi Hemophilia & Thrombosis Ctr, Milan, Italy
[8] Univ Leipzig, Clin Trial Ctr, D-04109 Leipzig, Germany
[9] Friedrich Schiller Univ Hosp, Dept Obstet & Gynecol, Jena, Germany
[10] LifeQuest Ctr Reprod Med, Toronto, ON, Canada
[11] Univ Toronto, Dept Med, Toronto, ON, Canada
[12] Univ Toronto, Dept Obstet & Gynecol, Toronto, ON, Canada
[13] Univ Ottawa, Dept Obstet & Gynecol, Ottawa, ON, Canada