“The Effect of Operational Audit, Internal Control, Good Clinical Governance and Business Ethics of Hospital Institutions on the Effectiveness of Services JKN/BPJS Patient Health (Empirical Study at Medan Adventist Hospital)”, IJSSRR, vol. 6, no. 3, pp. 29–36, Mar. 2023, doi: 10.47814/ijssrr.v6i3.958.