Received: 15 October 2020
Accepted: 25 January 2021
First Online: 23 February 2021
Ethics approval and consent to participate
: The study protocol was approved by the Goethe University (Frankfurt, Germany) ethics committee (register number: 78/18).
: Not applicable.
: The authors Karina Obrej, Ausra Ramanauskaite, Frank Schwarz, Amira Begic, Puria Parvini, and Maria Elisa Galarraga-Vinueza declare that they have no competing interests.