Wilde, Volker
Riegel, Walter
Funding for this research was provided by:
Lotto-Toto GmbH Sachsen-Anhalt
Ungerer Stiftung of SGN
Article History
Received: 21 December 2020
Revised: 3 March 2021
Accepted: 14 June 2021
First Online: 7 August 2021
Declarations
:
: The authors declare that they have no conflict of interest.