Funding for this research was provided by:
Faculty of Medicine, University of British Columbia (Florence E Heighway Summer Research Award)
Text and Data Mining valid from 2018-09-17
Received: 5 April 2018
Accepted: 10 September 2018
First Online: 17 September 2018
Ethics approval and consent to participate
: Ethical approval for this study was obtained from the Children’s and Women’s Research Ethics Board (#H15–01351) and informed verbal or written consent was obtained from the parents and/or legal guardians of children who participated in the telephone interview.
: Not applicable
: The authors declare that they have no competing interests.
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