Article History
Received: 6 March 2018
Accepted: 16 March 2018
First Online: 23 May 2018
Compliance with ethical standards
:
: Daniel De Backer: Consultant to and material for studies by Edwards Lifesciences. Ludhmila Hajjar: No conflict of interest. Michael R Pinsky: Consultant to Edwards Lifesciences, Cheetah Medical, LiDCO Ltd, Honoria for lectures from Masimo Inc, Edwards LifeSciences, Cheetah Medical. Stock options with LiDCO Ltd, Cheetah Medical.