Funding for this research was provided by:
Received: 4 June 2020
Accepted: 11 November 2020
First Online: 1 December 2020
Compliance with ethical standards
: Tu-Lan Vu-Han, Sebastian Hardt, Rudolf Ascherl, Clemens Gwinner, and Carsten Perka have nothing to disclose related to this work. IRB: Internal review board approval was obtained.