Article History
Received: 10 December 2020
Accepted: 6 January 2021
First Online: 25 January 2021
Compliance with ethical standards
:
: The authors state that they have no conflict of interest.
: The associated study was performed in line with the principles of the Declaration of Helsinki and has been approved by the Ethical Review Commitees of the Faculties of Medicine in Tuebingen (Project number 150/2015B01) and Heidelberg (Project number S-256/2015).
: Written informed consent was obtained from all individual participants included in the associated study.