Alemu, Muluken Asres, and TMM Maja. “Challenges and Solutions of Immunization Safety Surveillance in Assosa Zone, Ethiopia: Mixed Methods”. Research Journal in Medical and Health Sciences 4, no. 1 (February 4, 2023). Accessed June 13, 2025. https://www.royalliteglobal.com/rjmhs/article/view/982.