Article History
Received: 3 July 2018
Accepted: 31 July 2018
First Online: 16 August 2018
Compliance with ethical standards
:
: None.
: All procedures performed in this study involving human participants were in accordance with the Ethical Standards of the Institutional and/or National Research Committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. Specifically, the Health Research Ethics Board (HREB) approved this study before its conduct.
: Because this study was a secondary analysis of retrospective data, there was no direct contact with any participants. Therefore, informed consent was waived by the Ethics Committee.