Kordelas, Lambros http://orcid.org/0000-0003-3116-473X
da Silva Nardi, Fabiola
Wagner, Bettina
Ditschkowski, Markus
Liebregts, Tobias
Lindemann, Monika http://orcid.org/0000-0001-6708-4390
Heinemann, Falko M.
Horn, Peter A.
Beelen, Dietrich W.
Rebmann, Vera
Article History
Received: 4 August 2017
Revised: 6 February 2018
Accepted: 12 February 2018
First Online: 14 March 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.