M. Kahfiyansyah, E. Hadiyati, U. Muawanah, and Y. K. Arumsari, “Analysis of the Difference Between Actual Costs and Indonesian Case-Based Group (INA-CBG) Rates for Inpatients with Stroke”, IJGHR, vol. 8, no. 5, pp. 1261–1270, Oct. 2026.