HEALTH SERVICES UTILIZATION OF REFERRAL HOSPITAL IN SIX LARGEST ISLANDS DURING THE COVID-19 PANDEMIC: EVIDENCE FROM INDONESIA. ICOPH [Internet]. 2022 Nov. 3 [cited 2025 Dec. 8];7(1):39-56. Available from: https://proceedings.tiikmpublishing.com/index.php/icoph/article/view/1027