S. L. R. Nasution, A. . Affandi, and E. . Girsang, “Evaluation of Health Insurance Services Through Mobile Jkn In Dental Poly, Haji Hospital Medan 2022”, jppipa, pendidikan ipa, fisika, biologi, kimia, vol. 9, no. SpecialIssue, pp. 338–343, Dec. 2023.