Reiter, K
Polzer, H
Krupka, C
Maiser, A
Vick, B
Rothenberg-Thurley, M
Metzeler, K H
Dörfel, D
Salih, H R
Jung, G
Nößner, E
Jeremias, I http://orcid.org/0000-0003-1773-7677
Hiddemann, W
Leonhardt, H
Spiekermann, K
Subklewe, M
Greif, P A
Article History
Received: 7 April 2017
Revised: 14 July 2017
Accepted: 1 August 2017
First Online: 14 August 2017
Competing interests
: The authors declare no conflict of interest.