About the Authors

Helen Lunt

helen.lunt@cdhb.health.nz

Affiliations Canterbury District Health Board, Christchurch, New Zealand, University of Otago Christchurch, Christchurch, New Zealand

Nick Draper

Affiliation University of Canterbury, Christchurch, New Zealand

Helen C. Marshall

Affiliation University of Canterbury, Christchurch, New Zealand

Florence J. Logan

Affiliation Canterbury District Health Board, Christchurch, New Zealand

Michael J. Hamlin

Affiliation Lincoln University, Lincoln, New Zealand

Jeremy P. Shearman

Affiliation Christchurch Polytechnic Institute of Technology, Christchurch, New Zealand

James D. Cotter

Affiliation University of Otago, Dunedin, New Zealand

Nicholas E. Kimber

Affiliation Christchurch Polytechnic Institute of Technology, Christchurch, New Zealand

Gavin Blackwell

Affiliation University of Canterbury, Christchurch, New Zealand

Christopher M. A. Frampton

Affiliation University of Otago Christchurch, Christchurch, New Zealand

Competing Interests

Helen Lunt has received speaker fees from Sanofi Aventis (New Zealand) and Eli Lilly (New Zealand). This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: HL ND HM FJL MJH JPS JDC NEK GB CMF. Performed the experiments: HL ND HM FJL MJH JPS JDC NEK GB. Analyzed the data: CMF HL ND HM JDC. Wrote the paper: HL ND HM FJL MJH JPS JDC NEK GB CMF.