Frei, Anja http://orcid.org/0000-0002-7134-1000
Dalla Lana, Kaba
Radtke, Thomas
Stone, Emily
Knöpfli, Nevil
Puhan, Milo A.
Funding for this research was provided by:
UNISCIENTIA STIFTUNG
WALDER STIFTUNG
Article History
Received: 16 July 2018
Revised: 20 November 2018
Accepted: 27 February 2019
First Online: 1 April 2019
Compliance with ethical standards
:
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: The authors declare that they have no conflict of interest.