Nurul Hidayah NR, Yusriani Y, Samsualam S. The Effect of Perceived Usefulness on Health Information System Application (ASIK) Use Behavior for Immunization Activities in Makassar City. IHJ [Internet]. 2026 Jan. 3 [cited 2026 Apr. 8];6(01):34-9. Available from: https://ihj.ideajournal.id/index.php/IHJ/article/view/594