PT - JOURNAL ARTICLE AU - Russell S. Kirby TI - Race and preterm birth rates in North America AID - 10.1503/cmaj.151160 DP - 2016 Jan 05 TA - Canadian Medical Association Journal PG - 13--14 VI - 188 IP - 1 4099 - http://www.cmaj.ca/content/188/1/13.short 4100 - http://www.cmaj.ca/content/188/1/13.full SO - CMAJ2016 Jan 05; 188