Huda E. Zainudin, Engku Nuraishah, Khairool Azizul Mohammad, Athirah Aris, and Intan Azura Shahdan. 2018. “Vaccination: Influencing Factors and View from an Islamic Perspective”. IIUM Medical Journal Malaysia 17 (2). https://doi.org/10.31436/imjm.v17i2.997.