1. Askew J (2005) A survey of the current surgical treatment of gallstones in Queensland. ANZ J Surg 75:1086–1089
2. Gurusamy KS, Samraj K, Mullerat P, Davidson BR (2007) Routine abdominal drainage for uncomplicated laparoscopic cholecystectomy. Cochrane Database Syst Rev 3:CD006004
3. Huskisson EC (1974) Measurement of pain. Lancet 2:1127
4. Nomdedeu J, Escrig J, Salvador JL (1996) Systematic placement of drains in laparoscopic cholecystectomy. A prospective study. Revista de la Sociedad Valenciana de Patologia Digestiva 15:299–300
5. Capitanich P, Segundo UL, Malizia P, Herrera J, Iovaldi ML (2005) Usefulness of prophylactic drainage in laparoscopic cholecystectomy. Randomized prospective report. Prensa Med Argent 92:623–627