Jon Barrett 1, Elizabeth Asztalos 1, Andrew Willan 3, Mary Hannah 1, Eileen Hutton 2, Alexander Allen 4, B. Anthony Armson 5, Amiram Gafni 6, K. Joseph 7, Arne Ohlsson 8, Susan Ross 9
1 Sunnybrook Health Sciences Centre, University of Toronto, Women and Babies Program, Toronto, ON, Canada
2 McMaster University, Faculty of Health Sciences, Hamilton, ON, Canada
3 SickKids Research Institute, University of Toronto, Child Health Evaluative Sciences, Toronto, ON, Canada
4 IWK Health Centre, Dalhousie University, Paediatrics, Halifax, NS, Canada
5 IWK Health Centre, Dalhousie University, Obstetrics and Gynecology, Halifax, NS, Canada
6 McMaster University, Clinical Epidemiology & Biostatistics, Hamilton, ON, Canada
7 University of British Columbia, Obstetrics and Gynecology, Vancouver, BC, Canada
8 Mount Sinai Hospital, University of Toronto, Paediatrics, Toronto, ON, Canada
9 University of Alberta, Obstetrics and Gynecology, Edmonton, AB, Canada