Text and Data Mining valid from 2019-01-24
Received: 15 January 2019
Accepted: 17 January 2019
First Online: 24 January 2019
Compliance with ethical standards
: Daniel De Backer: Consultant to and material for studies by Edwards Lifesciences. Antoine Vieillard-Baron: Received grant from GSK for conducting clinical research and was member of the scientific advisory board for the study.
: An approval by an ethics committee was not applicable.