Okfriani C, Martha E. Barriers and facilitators to improving routine vaccination coverage in East Aceh during the COVID-19 pandemic: a qualitative study. BKM-PHCM [Internet]. 2023May26 [cited 2024Jul.8];39(05):e7139. Available from: https://dev.journal.ugm.ac.id/v3/BKM/article/view/7139