1. Department of Health Research Methods, Evidence & Impact, McMaster University , Hamilton, Ontario , Canada
2. Private Medical Practice, Peel Region , Ontario , Canada
3. Population Health Research Institute, McMaster University , Hamilton, Ontario , Canada
4. Department of Family Medicine, McMaster University , Hamilton, Ontario , Canada
5. Maternity Centre of Hamilton, David Braley Health Sciences Centre, McMaster University , Hamilton, Ontario , Canada
6. Department of Medicine, McMaster University , Hamilton, Ontario , Canada