Article History
Received: 12 December 2019
Accepted: 23 January 2020
First Online: 12 February 2020
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: ML received research funding from the French ministry of health, research support from Sphingotec, lecture fees from Fresenius and Baxter and consulting fees from Novartis. The other authors declare that they have no competing of interests.