Cuthbert, Colleen A. http://orcid.org/0000-0002-0940-2802
Hemmelgarn, Brenda R.
Xu, Yuan
Cheung, Winson Y.
Funding for this research was provided by:
Canadian Institutes of Health Research
Article History
Received: 5 June 2018
Accepted: 4 August 2018
First Online: 6 September 2018
Compliance with ethical standards
: This study received approval from the Health Research Ethics Board of Alberta (HREBA.CC-17-0034-REN1). Study findings are reported according to Strengthening of the Reporting of Observational Studies in Epidemiology (STROBE) guidelines.
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. For this type of study, formal consent is not required.