S. Yuliyanti, F. M. . Rifqi, R. L. . Prasetyo, E. . Nurhasanah, A. B. . Priambada, and P. Abbas, “Analysis of Basic Immunization Services during the COVID-19 Pandemic at Public Health Centers in Semarang”, Open Access Maced J Med Sci, vol. 9, no. E, pp. 1338–1344, Nov. 2021.