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FACTORS INFLUENCING PERCEIVED NEEDS FOR EMERGENCY MEDICAL SERVICES AMONG ELDERLY PATIENTS FROM FOUR PROVINCES IN THAILAND: Tassanee Silawan, Nitchaphat Khansakorn and Umawadee Laothong. SEATROPH. 2020;50(5):925-934. Accessed April 16, 2026. https://journal.seameotropmednetwork.org/index.php/jtropmed/article/view/86