title: Erratum to: Transvaginal hybrid NOTES cholecystectomy-results of a randomized clinical trial after 6 months.
authors.affiliation: Department of Abdominal, Vascular and Transplant Surgery, Cologne-Merheim Medical Center, Witten/Herdecke University, Ostmerheimer Strasse 200, 51109, Cologne, Germany. buliand@kliniken-koeln.de.
authors.forename: Dirk Rolf
authors.initials: DR
authors.lastname: Bulian
authors.affiliation: Department of Abdominal, Vascular and Transplant Surgery, Cologne-Merheim Medical Center, Witten/Herdecke University, Ostmerheimer Strasse 200, 51109, Cologne, Germany.|Department of General, Visceral, Vascular and Thoracic Surgery, Clinic of Kempten, Robert-Weixler-Strasse 50, 87439, Kempten, Germany.
authors.forename: Jurgen
authors.initials: J
authors.lastname: Knuth
authors.affiliation: Department of Abdominal, Vascular and Transplant Surgery, Cologne-Merheim Medical Center, Witten/Herdecke University, Ostmerheimer Strasse 200, 51109, Cologne, Germany.
authors.forename: Nicola
authors.initials: N
authors.lastname: Cerasani
authors.affiliation: Department of Abdominal, Vascular and Transplant Surgery, Cologne-Merheim Medical Center, Witten/Herdecke University, Ostmerheimer Strasse 200, 51109, Cologne, Germany.
authors.forename: Jonas
authors.initials: J
authors.lastname: Lange
authors.affiliation: Department of Abdominal, Vascular and Transplant Surgery, Cologne-Merheim Medical Center, Witten/Herdecke University, Ostmerheimer Strasse 200, 51109, Cologne, Germany.
authors.forename: Michael Alfred
authors.initials: MA
authors.lastname: Ströhlein
authors.affiliation: Department for Obstetrics and Gynecology, Holweide Hospital, Neufelder Strasse 32, 51067, Cologne, Germany.
authors.forename: Axel
authors.initials: A
authors.lastname: Sauerwald
authors.affiliation: Department of Abdominal, Vascular and Transplant Surgery, Cologne-Merheim Medical Center, Witten/Herdecke University, Ostmerheimer Strasse 200, 51109, Cologne, Germany.
authors.forename: Markus Maria
authors.initials: MM
authors.lastname: Heiss