Lertsithichai, Panuwat. “23rd Annual Congress of the Royal College of Surgeons of Thailand, July 1998”. The Thai Journal of Surgery 20, no. 1 (March 31, 1999): 25–40. Accessed April 19, 2024. https://he02.tci-thaijo.org/index.php/ThaiJSurg/article/view/247860.