Shiddieq, H. A., Soenaria, S. R. and Handoyo, S. (2025) “Applying Lean Methodology to Optimize Patient Flow in JKN Outpatient Services: Evidence from a Cardiac Hospital in Indonesia”, International Journal of Science and Society, 7(2), pp. 488-501. doi: 10.54783/ijsoc.v7i2.1461.