Article History
Received: 19 April 2019
Accepted: 6 May 2019
First Online: 17 May 2019
Compliance with ethical standards
:
: Dr. N. Aissaoui: Astra-Zeneca, Abiomed and Thoratec. Dr. JL. Diehl reported receiving research support and personal fees from Alung and Novalung/Xenios.