Sartika, Iik, and Ahyar Mahasin. “Analysis of The Implementation of Online Referral for National Health Security Participant At PKU Muhammadiyah Karanganyar Hospital”. STRADA Jurnal Ilmiah Kesehatan 9, no. 1 (May 1, 2020): 286–296. Accessed March 29, 2024. https://sjik.org/index.php/sjik/article/view/323.