Thangteekaraks, R. . and Wongtanasarasin, W. (2022) “Absence of Imaging Signs in Perforated Peptic Ulcer”, Thai Journal of Emergency Medicine. Bangkok, Thailand, 3(2), pp. 28–36. Available at: https://he02.tci-thaijo.org/index.php/TJEM/article/view/254687 (Accessed: 6 May 2024).