Farida N, Sartika M, Ismoyowati TW, Sohilait HPF. Changes in Preoperative Anxiety Following Video-Based Re-Education Delivered via WhatsApp Among Patients Undergoing Appendectomy: A Pre-Experimental Study. Jurnal Keperawatan Komprehensif (Comprehensive Nursing Journal) [Internet]. 2026 Oct. 31 [cited 2026 Nov. 1];12(4). Available from: https://journal.stikep-ppnijabar.ac.id/jkk/article/view/1064