Slavic, Svetlana
Ford, Kristopher
Modert, Magalie
Becirovic, Amarela
Handschuh, Stephan
Baierl, Andreas
Katica, Nejla
Zeitz, Ute
Erben, Reinhold G.
Andrukhova, Olena
Article History
Received: 15 May 2017
Accepted: 2 August 2017
First Online: 12 September 2017
Competing Interests
: The authors declare that they have no competing interests.