[1] Inst Polytech Paris, Lab Informat Ecole Polytech, CNRS, UMR 7161, F-91160 Palaiseau, France
[2] Univ Wisconsin, Wisconsin Inst Discovery, Madison, WI 53715 USA
[3] Univ Wisconsin, Dept Biostat & Med Informat, Madison, WI 53792 USA
[4] Inst Polytech Paris, Ecole Polytech, Dept Computat Sci, LIX,CNRS,UMR 7161, Palaiseau, France