Nasution, S.L.R. et al. 2023. Evaluation of Health Insurance Services Through Mobile Jkn In Dental Poly, Haji Hospital Medan 2022. Jurnal Penelitian Pendidikan IPA. 9, SpecialIssue (Dec. 2023), 338–343. DOI:https://doi.org/10.29303/jppipa.v9iSpecialIssue.4929.