Ridwan, M., Asriwati, A., & Nasution, R. S. (2025). ANALYSIS OF FACTORS AFFECTING HEPATITIS B IMMUNIZATION COVERAGE IN TODDLERS IN THE WORKING AREA OF THE GAMBIR BARU HEALTH CENTER, ASAHAN REGENCY. HEARTY, 13(5), 1360–1363. https://doi.org/10.32832/hearty.v13i5.21594