Susila, Seruni Angreni. “Local Officials and Private sectors’ Initiative in Organizing Massive COVID-19 Vaccination Sessions: Experience from the Ngemplak-1 Health Center of Sleman in Herd Immunity Acceleration Programs”. BKM Public Health and Community Medicine00 (October 31, 2021). Accessed November 25, 2024. https://jurnal.ugm.ac.id/v3/BKM/article/view/3263.