Article History
Received: 7 October 2019
Accepted: 28 November 2019
First Online: 10 December 2019
Compliance with ethical standards
:
: V Fuhrmann made lectures by CLS-Behring, Merz, Gambro, Fresenius, ADVITOS. M Bauer made lectures by ADVITOS. A Wilmer has nothing to declare.
Free to read: This content has been made available to all.