A. Tansawet, S. Techapongsatorn, S. Lerdsirisopon, W. Kasetsermviriya, and S. Srimontayamas, “An Experience of Laparoscopic surgery for Morbid obesity in Faculty of Medicine Vajira hospital”, Vajira Med J, vol. 58, no. 2, pp. 51–56, Nov. 2014.