Kiehl, Steffen
Herkt, Stefanie C.
Richter, Antje M.
Fuhrmann, Liesa
El-Nikhely, Nefertiti
Seeger, Werner
Savai, Rajkumar
Dammann, Reinhard H.
Article History
Received: 15 August 2014
Accepted: 18 September 2014
First Online: 4 November 2014
Competing interests
: The authors declare no competing financial interests.