Received: 17 June 2020
Accepted: 15 October 2020
First Online: 30 October 2020
Ethics approval and consent to participate
: All subjects were informed of the benefits and risks of the study prior to giving written informed consent to the experimental procedure, which was approved by the Ethikkommission Nordwest- und Zentralschweiz in Basel, Switzerland, protocol #2017–01825 and conducted in accordance with the latest version of the Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.