Funding for this research was provided by:
Maurice and Phyllis Paykel Trust
Gut Cancer Foundation (NZ) .
Colorectal Surgical Society of Australia and NZ
Health Research Council
Received: 21 August 2019
Accepted: 4 November 2019
First Online: 27 November 2019
Ethics approval and consent to participate
: Ethical approval was granted by the University of Otago Human Ethics Committee (ethics approval number: H16/037). Study participants gave informed written consent, and the study was performed in accordance with the Declaration of Helsinki.
: The authors declare that they have no competing interests.