Gothe, Holger
Rajsic, Sasa
Vukicevic, Djurdja
Schoenfelder, Tonio
Jahn, Beate
Geiger-Gritsch, Sabine
Brixner, Diana
Popper, Niki
Endel, Gottfried
Siebert, Uwe
Funding for this research was provided by:
Österreichische Forschungsförderungsgesellschaft
Main Association of Austrian Social Security Institutions
European Commission - Erasmus Mundus Western Balkans (none, none)
Article History
Received: 28 August 2018
Accepted: 30 September 2019
First Online: 22 October 2019
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: The authors declare that they have no competing interests.