Gigante, D. P.; Barros, F. C.; Veleda, R.; Gonçalves, H.; Horta, B. L.; Victora, C. G. Maternity and Paternity in the Pelotas Birth Cohort from 1982 to 2004-5, Southern Brazil . Rev. saúde pública 2008, 42 (suppl.2), 42-50. https://doi.org/10.1590/S0034-89102008000900007.