1. Law WL, Lee YM, Choi HK, Seto CL, Ho JW (2007) Impact of laparoscopic resection for colorectal cancer on operative outcomes and survival. Ann Surg 245(1):1–7
2. Kitano S, Shiraishi N, Uyama I, Sugihara K, Tanigawa N (2007) Japanese Laparoscopic Surgery Study Group. A multicenter study on oncologic outcome of laparoscopic gastrectomy for early cancer in Japan. Ann Surg 245:68–72
3. Bardram L, Funch-Jensen P, Jensen P, Crawford ME, Kehlet H (1995) Recovery after laparoscopic colonic surgery with epidural analgesia, and early oral nutrition and mobilisation. Lancet 345:763–764
4. McMahon AJ, Russell IT, Ramsay G, Sunderland G, Baxter JN, Anderson JR et al (1994) Laparoscopic and minilaparotomy cholecystectomy: a randomized trial comparing postoperative pain and pulmonary function. Surgery 115(5):533–539
5. Ellström M, Olsén MF, Olsson JH, Nordberg G, Bengtsson A, Hahlin M (1998) Pain and pulmonary function following laparoscopic and abdominal hysterectomy: a randomized study. Acta Obstet Gynecol Scand 77(9):923–928