VÉLEZ, Nydia M.; GARCÍA, Inés E.; GARCÍA, Lourdes; VALCÁRCEL, Marta. The use of illicit drugs during pregnancy among mothers of premature infants. Puerto Rico Health Sciences Journal, [S. l.], v. 27, n. 3, 2008. Disponível em: https://prhsj.rcm.upr.edu/index.php/prhsj/article/view/70. Acesso em: 16 dec. 2025.