Azis A. A, Rasjid A, Sudijanto S, Kurdi R. Optional Immunizations as Parameter of Parent’s Behavioral Change in Health Needs of Their Off-springs. PI [Internet]. 2017Jun.16 [cited 2025May3];19(11-12):265-75. Available from: https://paediatricaindonesiana.org/index.php/paediatrica-indonesiana/article/view/1541