Anis Qamarina H, Arifah Qhaliesya R, Athirah Farhanah, et al. Awareness towards Optional Vaccinations among Pre-clinical MBBS Students in a Medical College in Malaysia. Asian J Med Health Sci. 2021;4(2):54-60. Accessed February 27, 2026. https://ejournal.unikl.edu.my/index.php/ajmhs/article/view/103