Worawanthanachai, Thammanit. “Comparison between Laparoscopic Subtotal Cholecystectomy and Open Conversion in Difficult Laparoscopic Cholecystectomy”. The Thai Journal of Surgery 43, no. 2 (August 22, 2022): 78–85. accessed October 4, 2026. https://he02.tci-thaijo.org/index.php/ThaiJSurg/article/view/254967.