1. Department of General Practice, University of Liège, Liège, Belgium;
2. Health Sciences Center, University of Texas, Houston, TX, USA;
3. Department of Information and Medical Informatics (D2IM), University of Rouen, Rouen, France;
4. HEC School of Management, University of Liège, Liège, Belgium;
5. Italian Institute of Informatics and Telematics, National Research Council, Cosenza, Italy;
6. Heymans Institute, University of Ghent, Ghent, Belgium