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.