Received: 5 November 2021
Accepted: 24 January 2022
First Online: 7 February 2022
: Not applicableThe rules applicable in Switzerland in terms of ethics specify that an authorization by an Ethics Commission is not required for a study with anonymous data where it is not possible to identify patients by crosschecking of data. Reference: Federal Act on Research involving Human Beings (HRA) of 30 September 2011 (Status as of 26 May 2021, article 2 paragraph 2c). The data used in the study was anonymized before its use.
: Not applicable.
: Yves Eggli is the author of the SQLape® patients classification system used in this article and its promoter through the SQLape s.à.r.l., Ch. de la Paix 43, CH-1803 Chardonne (Switzerland). The three other authors do not have any competing interests.