Text and Data Mining valid from 2019-05-28
Received: 18 October 2018
Accepted: 16 May 2019
First Online: 28 May 2019
Compliance with ethical standards
: Mona. W. Schmidt, Karl-Friedrich Kowalewski, Sarah Trent, Laura Benner and Beat-Peter Müller-Stich have no conflict of interest or financial ties to disclose. F. Nickel reports receiving travel support for conference participation as well as equipment provided for laparoscopic surgery courses by KARL STORZ, Johnson & Johnson, Intuitive and Medtronic.