Solikah Sriningsih 2021. Application of the Principle of Proportionality in Health Service Contracts between Hospitals and The Social Security Organization (BPJS). Jurnal Hukum dan Etika Kesehatan. 1, 1 (Mar. 2021), 1–10. DOI:https://doi.org/10.30649/jhek.v1i1.11.