Text and Data Mining valid from 2020-01-17
Received: 1 November 2019
Accepted: 1 January 2020
First Online: 17 January 2020
Ethics approval and consent to participate
: The patients gave written informed consent for participation in the GPR. The Ethics Committee of the Chamber of Physicians of the Federal State of Saarland approved the GPR (No. 29/14).The Ethics Committee of the Eberhard-Karls-University in Tübingen, Germany, approved this retrospective cohort study (No. 968/2018BO2).
: Consent for publication was part of the written informed consent the patients gave for their participation in the GPR.
: Not applicable