R. Prabaswara, 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”, midwifery, vol. 12, no. 2, pp. 713-721, Jun. 2024.