Prabaswara, R., M. I. Kalla, P. O. Siregar, M. M. A. Falihin, B. S. P. Simanjuntak, and S. Sormin. “Cluster Analysis of Province Case Mix Index on Indonesian National Health Security (BPJS Kesehatan) System”. Science Midwifery, Vol. 12, no. 2, June 2024, pp. 713-21, doi:10.35335/midwifery.v12i2.1536.