P. . Lertsithichai, T. . Angkoolpakdeekul, and T. . Ekwongviriya, “Laparoscopic versus Open Surgery for Colorectal Cancer: Oncologic and Short-term Clinical Outcomes in a Thai Tertiary-care Hospital”, Thai J Surg, vol. 29, no. 4, pp. 197–143, Dec. 2008.