Silva, H. D., I. D. N. Wibawa, I. Pinatih, and .-. Mulyanto. “The Influence of the Use of Used Syringe Needles, Permanent Tattoos, and Sharing Razors Toward Hepatitis B Virus Infection in Dili City, Timor-Leste”. International Research Journal of Engineering, IT & Scientific Research, vol. 3, no. 2, Mar. 2017, pp. 165-70, https://sloap.org/journals/index.php/irjeis/article/view/544.