Galduróz, José Carlos Fernandes, Ana Regina Noto, Solange Aparecida Nappo, and Elisaldo Luiz de Araújo Carlini. 2003. “First Household Survey on Drug Abuse in São Paulo, Brazil, 1999: Principal Findings”. São Paulo Medical Journal 121 (6):231-37. https://periodicosapm.emnuvens.com.br/spmj/article/view/2659.