Single-incision appendectomy is comparable to conventional laparoscopic appendectomy: a systematic review and pooled analysis Gill, R.S.; Shi, X.; Al-Adra, D.P.; Birch, D.W.; Karmali, S. Surgical Laparoscopy Endoscopy and Percutaneous Techniques 22(4): 319-327 2012 https://eurekamag.com/research/055/797/055797465.php