1. Division of Epidemiology, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
2. MAP Centre for Urban Health Solutions, St Michael's Hospital, Toronto, Ontario, Canada
3. Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
4. Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada
5. ICES, Toronto, Ontario, Canada
6. Women's College Hospital, Toronto, Ontario, Canada
7. Gillings School of Global Public Health, University of North Carolina at Chapel Hill
8. Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
9. Keenan Research Centre, St Michael’s Hospital, Toronto, Ontario, Canada
10. Department of Obstetrics and Gynecology, St Michael’s Hospital, Toronto, Ontario, Canada