- Correspondence to Dr Ann N Burchell, Department of Family and Community Medicine and Li Ka Shing Knowledge Institute, St. Michael's Hospital, 30 Bond Street, Toronto, Ontario, Canada M5B 1W8;
- Received December 28, 2015
- Revised March 31, 2016
- Accepted April 16, 2016
- First published May 6, 2016.
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