1 CREST UMR 9194, ENSAE formation continue, 91120 Palaiseau, France. Electronic address: Eric.Matzner-Lober@ensae.fr.
2 Department of medical information, Montpellier University Hospitals, Montpellier, France.
3 Department of abdominal and interventional radiology, hôpital Cochin, AP-HP, 75014 Paris, France; Université Descartes Paris 5, Sorbonne Paris Cité, 75005 Paris, France.
4 IMAG, CNRS, université Montpellier, CHU Montpellier, Montpellier, France.