Evaluation of Patient Retention in The Methadone Maintenance Treatment Program at Embung Fatimah Hospital, Batam. Immortalis Journal of Medical and Allied Health Sciences, [S. l.], v. 1, n. 1, p. 11–25, 2026. DOI: 10.67307/ijmahs.v1i1.120. Disponível em: https://immortalispub.com/IJMAHS/article/view/120. Acesso em: 9 aug. 2026.