1. World Health Statistics. Monitoring health for the SDGs, sustainable development goals. Geneva: World Health Organization; 2018. Licence: CC BY-NC-SA 3.0 IGO. http://apps.who.int/iris/bitstream/handle/10665/44864/9789241503433_eng.pdf;jsessionid=08BF66035CAF3648BA021426748B8A5F?sequence=1. Accessed 1 Dec 2018.
2. Liu L, Oza S, Hogan D, Chu Y, Perin J, Zhu J, et al. Global, regional, and national causes of under-5 mortality in 2000-15: an updated systematic analysis with implications for the Sustainable Development Goals. Lancet. 2016;388(10063):3027–35.
3. WHO, March of Dimes, Partnership for Maternal, Newborn & Child Health, Save the Children. Born too soon: the global action report on preterm birth. 2012. www.who.int/maternal_child_adolescent/documents/born_too_soon/en/. Accessed 1 Dec 2018.
4. Blencowe H, Cousens S, Oestergaard MZ, et al. National, regional, and worldwide estimates of preterm birth rates in the year 2010 with time trends since 1990 for selected countries: a systematic analysis and implications. Lancet. 2012;379:2162.
5. National Collaborating Centre for Women’s and Children’s Health, 2015. https://www.nice.org.uk/guidance/ng25/evidence/full-guideline-pdf-2176838029. Accessed 1 Dec 2018.