[1] CHEO, OCTC, BORN, Ottawa, ON, Canada
[2] Childrens Hosp Eastern Ontario, Res Inst, Ottawa, ON, Canada
[3] Univ Ottawa, Sch Nursing, Ottawa, ON, Canada
[4] Ottawa Hosp, Res Inst, Clin Epidemiol Program, Ottawa, ON, Canada
[5] Univ Ottawa, Sch Epidemiol & Publ Hlth, Ottawa, ON, Canada
[6] Univ Ottawa, Dept Med, Ottawa, ON, Canada
[7] McMaster Univ, McMaster Midwifery Res Ctr, Hamilton, ON, Canada
[8] Childrens Hosp Eastern Ontario, Div Neonatol, Ottawa, ON, Canada
[9] Ottawa Hosp, Ottawa, ON, Canada
[10] Univ Ottawa, Dept Pediat, Ottawa, ON, Canada
[11] Queens Univ, Dept Obstet & Gynecol, Kingston, ON, Canada
[12] Kingston Gen Hosp, Kingston, ON, Canada
[13] Ottawa Hosp, Res Inst, OMNI Res Grp, Ottawa, ON, Canada
[14] Ottawa Hosp, Dept Obstet Gynecol & Newborn Care, Ottawa, ON, Canada
[15] Univ Ottawa, Dept Obstet & Gynecol, Ottawa, ON, Canada