Antonio, C. A. T., C. M. J. Li, J. Y.- man Siu, J. P. Guevarra, J. B. M. Leabres, S. B. D. Vista, and L. R. Estacio, Jr. “Treatment and rehabilitation for illicit drug users in the Philippines: a review of policy and service arrangement”. Journal of Public Health and Development, vol. 19, no. 3, Aug. 2021, pp. 143-6, https://he01.tci-thaijo.org/index.php/AIHD-MU/article/view/251554.