Bruch, R. https://orcid.org/0000-0003-0893-330X
Chatelle, C.
Kling, A.
Rebmann, B.
Wirth, S.
Schumann, S. https://orcid.org/0000-0003-0773-7489
Weber, W.
Dincer, C. https://orcid.org/0000-0003-3301-1198
Urban, G.
Article History
Received: 1 February 2017
Accepted: 26 April 2017
First Online: 9 June 2017
Competing Interests
: The authors declare that they have no competing interests.