FILBY, S; VAN ZYL-SMIT, R; SOIN, G; KURTEN, S. E-cigarette, cannabis, hookah and tobacco use patterns in fee-paying South African high schools. South African Medical Journal, South Africa, v. 116, n. 1, p. e3847, 2026. DOI: 10.7196/SAMJ.2026.v116i1.3847. Disponível em: https://samajournals.co.za/index.php/samj/article/view/3847. Acesso em: 25 jun. 2026.