Lertsithichai, P. . “Abstracts of the 33rd Annual Scientific Meeting of the Royal College of Surgeons of Thailand, 17-20 July 2008, Pattaya Exhibition And Convention Hall (PEACH), Pattaya, Thailand (Part 1)”. The Thai Journal of Surgery, vol. 29, no. 3, July 2008, pp. 109-32, https://he02.tci-thaijo.org/index.php/ThaiJSurg/article/view/241038.