Simorangkir R, Lumbanraja V. SERVICE QUALITY AT RSUD DR. PIRNGADI MEDAN IN THE CONTEXT OF THE IMPLEMENTATION OF MEDAN CITY REGULATION NUMBER 4 OF 2012 ON THE CITY HEALTH SYSTEM. IJSSPP [Internet]. 2026 Jun. 1 [cited 2026 Jun. 4];4(2):70-3. Available from: https://ijsspp.yayasanwayanmarwanpulungan.com/index.php/IJSSPP/article/view/178