1. Department of Family Medicine, Faculty of Health Sciences, McMaster University, Hamilton
2. St. Joseph's Health Care System Research Network, the Father Sean O'Sullivan Research Centre, St. Joseph's Hospital, Hamilton, and St. Joseph's Hospital and Home, Guelph, Ontario
3. Department of Family Medicine, Faculty of Medicine, Dalhousie University, and QEII Health Sciences Centre, Halifax
4. Department of Family Medicine and Medicine, Faculty of Medicine, Dalhousie University, and QEII Health Sciences Centre, Halifax, Nova Scotia, Canada