Funding for this research was provided by:
Canadian Cancer Society (703058)
Received: 30 January 2019
Accepted: 5 February 2019
First Online: 12 February 2019
Compliance with ethical standards
: All 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 and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.