Sauer, M
Schuldner, M
Hoffmann, N
Cetintas, A
Reiners, K S
Shatnyeva, O
Hallek, M
Hansen, H P
Gasser, S
von Strandmann, E P
Article History
Received: 4 February 2016
Revised: 12 May 2016
Accepted: 13 June 2016
First Online: 1 August 2016
Competing interests
: The authors declare no conflict of interest.