1. Université de Toulouse, IRIT, UMR CNRS 5505, Toulouse, France
2. University of Zurich, OR-X, Balgrist Hospital, Zurich, Switzerland
3. Normandie Univ, UNICAEN, ENSICAEN, CNRS, GREYC, Caen, France
4. DIKU, Department of Computer Science, Copenhagen, Denmark