Received: 22 November 2019
Accepted: 11 June 2020
First Online: 19 June 2020
Ethics approval and consent to participate
: This study was conducted according to the Ethical Guidelines for Medical and Health Research Involving Human Subjects. The present study was approved by the Ethics Review Committee (University Medical Center Goettingen). The research study was approved by the institutional review board (IRB) of both institutions and a written consent was given from all patients.
: Written informed consent was obtained from all study participants included in the study.
: Adrien Sportes, Carlo Felix Maria Jung, Mark Gromski, Ali Sei Amir Hosseini, Philipp Kauffmann and Volker Ellenrieder have no conflicts of interest or financial ties to disclose. Edris Wedi received material and financial support from Ovesco Endoscopy AG for research projects.