1. a Centre for Research on Inner City Health, the Keenan Research Center of the Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Ontario, Canada
2. b Health Systems Research and Consulting Unit, Centre for Addiction and Mental Health, University of Toronto, Toronto
3. c Streets to Homes Program for the City of Toronto
4. d Health Systems Research and Consulting Unit, Centre for Addiction and Mental Health, Toronto
5. e Centre for Addiction and Mental Health, Toronto
6. f Toronto North Support Services, Toronto