Bellut, Julia
Bertz, Simone
Nolte, Elke
Stöhr, Christine http://orcid.org/0000-0001-7501-4886
Polifka, Iris
Lieb, Verena
Herrmann, Edwin
Jung, Rudolf
Hartmann, Arndt
Wullich, Bernd
Taubert, Helge
Wach, Sven
Article History
Received: 26 July 2017
Accepted: 8 November 2017
First Online: 27 November 2017
Competing Interests
: The authors declare that they have no competing interests.