@article{3c33190e8b7246ec864f62e5d9f866cd,
title = "Effects of maternal age and age-specific preterm birth rates on overall preterm birth rates - United States, 2007 and 2014",
author = "Cynthia Ferr{\'e} and William Callaghan and Christine Olson and Andrea Sharma and Wanda Barfield",
year = "2016",
month = nov,
day = "4",
doi = "10.15585/mmwr.mm6543a1",
language = "English",
volume = "65",
pages = "1181--1184",
journal = "Morbidity and Mortality Weekly Report",
issn = "0149-2195",
publisher = "Centers for Disease Control and Prevention (CDC)",
number = "43",
}