1. Epidemiology and causes of preterm birth;Goldenberg;Lancet,2008
2. Institute of Medicine (US) Committee on Understanding Premature Birth and Assuring Healthy Outcomes;Behrman,2007
3. 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;Blencowe;Lancet,2012
4. Births: final data for 2018;Martin;Natl Vital Stat Rep,2019
5. Infant mortality in the United States, 2018: data from the period linked birth/infant death file;Ely;Natl Vital Stat Rep,2020