@article{article603c490f,
title   = {Evidence grade associating periodontitis to preterm birth and/or low birth weight: I. a systematic review of prospective cohort studies},
author = {Chambrone, Leandro and Guglielmetti, Mariana Rocha and Pannuti, Cláudio Mendes and Chambrone, Luiz Armando},
year = {2011},
doi = {10.1111/j.1600-051X.2011.01755.x},
journal   = {Journal of Clinical Periodontology}
}