Gratza, S. K.
Chocano-Bedoya, P. O.
Orav, E. J.
Fischbacher, M.
Freystätter, G.
Theiler, R.
Egli, A.
Kressig, R. W.
Kanis, J. A.
Bischoff-Ferrari, H. A.
Funding for this research was provided by:
Baugarten Stiftung
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (PP00B-114864, NFP-53)
Velux Stiftung
Vontobel-Stiftung
Article History
Received: 17 January 2019
Accepted: 24 July 2019
First Online: 3 August 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.