Hieber, Simone E.
Bikis, Christos
Khimchenko, Anna
Schweighauser, Gabriel
Hench, Jürgen
Chicherova, Natalia
Schulz, Georg
Müller, Bert
Article History
Received: 14 April 2016
Accepted: 19 July 2016
First Online: 1 September 2016
Competing interests
: The authors declare no competing financial interests.