BECKER, P.; RAZZOUK, D. Direct healthcare costs and their relationships with age at start of drug use and current pattern of use: a cross-sectional study. São Paulo Medical Journal, [S. l.], v. 139, n. 1, p. 18–29, 2021. Disponível em: https://periodicosapm.emnuvens.com.br/spmj/article/view/384. Acesso em: 14 mar. 2025.