1. OMNI Research Group, Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
2. Department of Obstetrics, Gynecology & Newborn Care, University of Ottawa, Ottawa, Ontario, Canada
3. Better Outcomes Registry and Network (BORN), Ottawa, Ontario, Canada
4. Queen’s Perinatal Research Unit, Kingston General Hospital, Department of Obstetrics and Gynecology, Queens University, Kingston, Ontario, Canada