Nakamura, M. U., S. M. Alexandre, J. F. K. dos Santos, E. de Souza, N. Sass, A. P. A. Beck, E. Trayna, C. M. de A. Andrade, T. Barroso, and L. Kulay Júnior. “Obstetric and Perinatal Effects of Active and/Or Passive Smoking During Pregnancy”. São Paulo Medical Journal, vol. 122, no. 3, May 2004, pp. 94-98, https://periodicosapm.emnuvens.com.br/spmj/article/view/2497.