Gottstein, Martin http://orcid.org/0000-0002-7973-6584
Pratsinis, Manolis
Güsewell, Sabine
Betschart, Patrick
Abt, Dominik
Knoll, Thomas
Article History
Received: 20 April 2020
Accepted: 7 August 2020
First Online: 12 August 2020
Conflicts of interest/Competing interests
: The authors have no conflicts of interest.
: Both study sites obtained approval by the ethics committee (F2017-033, EKOS2017-01944).
: All participants provided written informed consent for study inclusion and publication of study results.