Funding for this research was provided by:
Canadian Cancer Society (CBCF)
Text and Data Mining valid from 2019-08-09
Received: 8 July 2019
Accepted: 2 August 2019
First Online: 9 August 2019
Compliance with ethical standards
: Dr Vieth is an unpaid advisor to the Vitamin D Society, and receives royalties from partial ownership and a patent pertaining to vitamin D supplementation.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee (Ottawa Hospital Research Ethics Board) 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.