1. 1. World Health ICD-11 for Mortality and morbidity statistics (ICD-11 MMS) 2018 version [cited 2019 Sep 26], 11th revision. Geneva: WHO; 2018. Available from: https://icd.who.int/browse11/l-m/en
2. 2. World Health Organization (WHO). Preterm birth. Fact sheet. Geneva: WHO; 2017. [ cited 2018 Mar 12]. Available from: http://www.who.int/mediacentre/factsheets/fs363/es/
3. Recommendation for the definition of “late preterm” (near-term) and the birth weight-gestational age classification system;Engle;Semin Perinatol,2006
4. Recién nacidos pretérminos tardíos, un grupo de riesgo;Guzmán;Rev Cubana Pediatr,2016
5. State population-based changes in preterm delivery - impact of efforts to enforce recommendations to eliminate early elective deliveries [Meeting Abstract,136];Berry;Pediatrics,2018