Hein, Manuel
Minners, Jan
Jander, Nikolaus
Breitbart, Philipp
Stratz, Christian
Pache, Gregor
Neumann, Franz-Josef
Ruile, Philipp
Article History
Received: 10 July 2018
Accepted: 31 January 2019
First Online: 6 February 2019
Compliance with ethical standards
:
: Dr. Pache: consultant for Edwards Lifesciences Inc. The other authors have no conflicts of interest to declare.