Krähling, Hermann
Masthoff, Max
Schwindt, Wolfram
Stracke, Christian Paul
Schindler, Philipp http://orcid.org/0000-0002-8098-9853
Funding for this research was provided by:
Projekt DEAL
Article History
Received: 30 November 2020
Accepted: 7 January 2021
First Online: 18 January 2021
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: For this type of study, ethical approval was waived. The authors affirm that participants provided informed consent for publication of the history and images in Figs. InternalRef removed and InternalRef removed.