Chatchairatanavej N, Amnuaypattanapon K. The Epidemiology of Emergency Medical Service at Thammasat University Hospital. TJEM [internet]. 2020 Jun. 30 [cited 2026 Sep. 19];2(1):1-16. available from: https://he02.tci-thaijo.org/index.php/TJEM/article/view/249269