@misc{miscd14ae345, title = {Risk of preterm birth: a case-control population-based}, author = {Assunção, Paula Lisiane and Novaes, Hillegonda Maria Dutilh and Alencar, Gizelton Pereira and Melo, Adriana Suely de Oliveira and Almeida, Marcia Furquim de}, year = {2011}, booktitle = {IEA World Congress of Epidemiology} }