Received: 10 January 2022
Accepted: 18 April 2022
First Online: 13 May 2022
: This study was approved by the Institutional Review Board of Kanton St. Gallen, Switzerland, with a waiver of the requirement for informed consent of the participants as the study involved the analysis of publicly available data(EKSG 01/06/2010). The study was conducted in accordance with recognized ethical standards according to the Declaration of Helsinki adopted in 1964 and revised in 2013.
: Not applicable.
: Beat Knechtle, Ivan Cuk, Elias Villiger, Pantelis T. Nikolaidis, Katja Weiss, Volker Scheer, and Mabliny Thuany declare no competing interests.