1. Centro de Protonterapia Quironsalud, Madrid, Spain
2. IMNC, University Paris-Sud and Paris-Saclay, CNRS/IN2P3, Orsay, France
3. Institut Curie, Institut Curie, PSL Research University, Centre de protonthérapie d’Orsay, Campus universitaire, bâtiment 101, Orsay 91898, France
4. Institut Curie, Inserm U 1021-CNRS UMR 3347, Paris-Saclay and PSL Research Universities, Orsay, France