Funding for this research was provided by:
Health Research Council of New Zealand (14/484)
Received: 23 May 2017
Accepted: 21 December 2017
First Online: 15 January 2018
Ethics approval and consent to participate
: Ethical approval for this study and for the use of patient data from the Waikato Breast Cancer Register was obtained from the New Zealand Northern ‘A’ Ethics Committee (Ref. No. 12/NTA/42/AM01). The data were analysed anonymously. No specific consent is required for the analysis.
: Not applicable.
: The authors declare that they have no competing interests.
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