MATHAR, I.; HANDAYANI, O. W. K.; WIDOWATI, E.; ZAINAFREE, I. Systemic Barriers to Preventing Fraud in National Health Insurance (JKN) Claims: Perspectives from Regional Hospitals and BPJS Kesehatan. TEC EMPRESARIAL, [S. l.], v. 21, n. 1, p. 30–53, 2026. Disponível em: https://revistas.tec-ac.cr/index.php/tec_empresarial/article/view/727. Acesso em: 3 feb. 2026.