1. Family planning and the burden of unintended pregnancies;Tsui;Epidemiol Rev,2010
2. Contraception and health;Cleland;Lancet,2012
3. Health Quality and Safety Commission New Zealand. Atlas of Healthcare Variation - Contraceptive use by women 2018. https://www.hqsc.govt.nz/our-programmes/health-quality-evaluation/projects/atlas-of-healthcare-variation/contraceptive-use/ (accessed October 20, 2021).
4. Paterson R, Candy A, Lilo S, McCowan L, Naden R, O'Brien M. External review of maternity care in counties Manukau District Health Board: Counties Manukau District Health Board 2012. https://www.countiesmanukau.health.nz/assets/About-CMH/Reports-and-planning/Maternity/ca951b0c9a/2012-CMH-external-report-maternity-care-review.pdf (accessed April 11, 2021).
5. Hutchison P. Inquiry into improving child health outcomes and preventing child abuse with a focus from preconception until three years of age. Volume 1: Report of the Health Committee 2013. https://www.parliament.nz/resource/en-NZ/50DBSCH_SCR6007_1/3fe7522067fdab6c601fb31fe0fd24eb6befae4a (accessed April 11, 2021).