1. Lausanne University Medical Center, Lausanne, Switzerland;
2. Besançon Hospital, Besancon, France;
3. CH de Bretagne Sud, Lorient, France;
4. Institut Gustave Roussy, Villejuif, France;
5. Centre Guillaume Le Conquerant, Le Havre, France;
6. Centre Georges-François Leclerc, Dijon, France;
7. Georges-François Leclerc Center, Radiotherapy Department, Dijon, France;
8. Centre Rene Gauducheau, Nantes, France;
9. Centre Jean Perrin, Clermont, France;
10. Clinique Mutualiste, Saint Nazaire, France;
11. Institute Gustave Roussy, Villejuif, France;