Arviana, M. E., and F. Hafidz. “The Relationship Between Health Insurance Ownership and Health Service Utilization, Out-of-Pocket Expenses, and Catastrophic Health Expenditure in the Special Region of Yogyakarta in 2023”. BKM Public Health and Community Medicine, June 2024, https://jurnal.ugm.ac.id/v3/BKM/article/view/13366.