Institut National de Santé Publique du Québec, Montreal, Canada (U.V.U., N.A., A.A.); HealthPartners Institute, Pregnancy and Child Health Research Center, Bloomington, MN (U.V.U.); Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, Canada (U.V.U., R.W.P., N.A., N.D.); Department of Obstetrics and Gynaecology and the BC Children’s and Women’s Hospital, The University of British Columbia, Vancouver, Canada (S.L.); Department of Medicine and the Institute of Health Policy and Evaluation, University of Toronto, Toronto, Canada (J.G.R.); Department of Obstetrics and Gynecology, University of Ottawa, Ottawa, Canada (D.E.-C.); Department of Medicine, McGill University Health Centre, Montreal, Canada (I.M., N.D.); and Centre for Outcomes Research and Evaluation, Research Institute of the McGill University Health Centre, Montreal, Canada (I.M., N.D.)