Article History
Received: 18 August 2021
Accepted: 18 May 2022
First Online: 19 July 2022
Declarations
:
: Financial interests: the authors declare they have no financial interests. Non-financial interests: U.I. is a medical advisor for Mathys Ltd Bettlach.
: This study was approved by The Comité intercantonal d’éthique (Jura, Fribourg, Neuchatel) in February 2012 (number 012/10770). It is compliant with the Declaration of Helsinki.