About the Authors

Rachel V. Purcell

rachel.purcell@otago.ac.nz

Affiliation Department of Surgery, University of Otago Christchurch, Christchurch, New Zealand

John Pearson

Affiliation Biostatistics and Computational Biology Unit, University of Otago Christchurch, Christchurch, New Zealand

Alan Aitchison

Affiliation Department of Surgery, University of Otago Christchurch, Christchurch, New Zealand

Liane Dixon

Affiliation Department of Surgery, University of Otago Christchurch, Christchurch, New Zealand

Frank A. Frizelle

Affiliation Department of Surgery, University of Otago Christchurch, Christchurch, New Zealand

Jacqueline I. Keenan

Affiliation Department of Surgery, University of Otago Christchurch, Christchurch, New Zealand

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceptualization: RP FF JK. Data curation: LD. Formal analysis: JP. Investigation: RP LD. Methodology: RP JP. Resources: FF JK. Supervision: JK. Validation: RP AA. Visualization: RP JP. Writing – original draft: RP. Writing – review & editing: RP FF JK.