1. Global, regional, and national estimates of levels of preterm birth in 2014: a systematic review and modelling analysis;Chawanpaiboon;The Lancet Global Health,2019
2. Maternal risk factors and obstetric complications in late preterm prematurity;Trilla;European Journal of Obstetrics, Gynecology, and Reproductive Biology,2014
3. Suman V, Luther EE. Preterm Labor. StatPearls. Treasure Island (FL). 2021.
4. Institute of Medicine (US) Committee on Understanding Premature Birth and Assuring Healthy Outcomes; Behrman RE BA, editors. Preterm Birth: Causes, Consequences, and Prevention. Washington (DC): National Academies Press (US); 2007. 10, Mortality and Acute Complications in Preterm Infants. Available from: https://www.ncbi.nlm.nih.gov/books/NBK11385/. 2007.
5. Preterm birth and mortality in adulthood: a systematic review;Crump;Journal of Perinatology,2020