Gress, Stefan http://orcid.org/0000-0003-0934-2296
Article History
Received: 8 March 2021
Accepted: 23 May 2021
First Online: 6 July 2021
Declarations
:
: The author declares that he has no conflicts of interest to disclose.
: All procedures were performed in studies involving human participants in accordance with ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or compatible ethical standards.
: For this type of study, informed consent is not required.