Article History
Received: 9 May 2021
Accepted: 13 October 2021
First Online: 24 October 2021
Declarations
:
: The authors declare that there are no conflicts of interest.
: The study protocol conformed to the ethical guidelines of the 1975 Declaration of Helsinki. This study protocol was conducted retrospectively from data obtained for clinical purposes. All procedures performed were in accordance with the ethical standards of the Ethics committee of the Schleswig-Holstein Physicians` chamber (reference number 021/20 I).