1. Department of Global Health and Population, Harvard T.H. Chan School of Public Health , 665 Huntington Avenue, Building 1, room 1104, Boston, MA 02115, United States
2. Department of Family Practice, University of British Columbia , David Strangway Bldg 5950 University Blvd 3rd Floor, Vancouver, BC V6T 2A1, Canada
3. Faculty of Health Sciences, Simon Fraser University , Blusson Hall, Room 11300 8888 University Drive, Burnaby, BC V5A 1S6, Canada
4. Department of Health Policy and Management, Harvard T.H. Chan School of Public Health , Kresge 3rd & 4th Floors, 677 Huntington Avenue, Boston, MA 02115, United States