Heck, S.
Al-Shobash, S.
Rapp, D.
Le, D. D.
Omlor, A.
Bekhit, A.
Flaig, M.
Al-Kadah, B.
Herian, W.
Bals, R.
Wagenpfeil, S. http://orcid.org/0000-0002-4558-4041
Dinh, Q. T.
Article History
Received: 1 April 2016
Revised: 2 March 2017
Accepted: 21 March 2017
First Online: 21 April 2017
Competing interests
: The authors declare that they do not have any competing interests in relation to this article.