1. Epidemiology and causes of preterm birth;Goldenberg;Lancet,2008
2. The enigma of spontaneous preterm birth;Muglia;N Engl J Med,2010
3. Trends in smoking before, during, and after pregnancy—Pregnancy Risk Assessment Monitoring System, United States, 40 sites, 2000–2010;Tong;MMWR Surv Summ,2013
4. Newly released data from the revised US birth certificate, 2011;Osterman;National Vital Stat Rep,2013
5. Interventions for promoting smoking cessation during pregnancy;Lumley;Cochrane Database Syst Rev,2009