Text and Data Mining valid from 2019-01-25
Received: 11 November 2018
Accepted: 8 January 2019
First Online: 25 January 2019
Conflict of interest
: R. Capocci, E. Shotar, F. Di Maria, C. Rolla-Bigliani, A. Al Raaisi, A. André, J. Mahtout, A.-L. Boch, V. Degos, N. Sourour and F. Clarençon declare that they have no competing interests.