Schwab, D M
Tilemann, L
Bauer, R
Heckmann, M
Jungmann, A
Wagner, M
Burgis, J
Vettel, C
Katus, H A
El-Armouche, A
Müller, O J
Article History
Received: 4 May 2017
Revised: 16 October 2017
Accepted: 20 November 2017
First Online: 19 January 2018
Competing interests
: The authors declare no conflict of interest.