1. Medical Physics Unit; European Institute of Oncology; Milano Italy
2. Radiation Oncology Unit; MultiMedica Clinical Institute, Sesto S. Giovanni; Milano Italy
3. Bioengineering Division; Dipartimento di Elettronica, Informazione e Bioingegneria; Politecnico di Milano Milano Italy
4. Bioengineering Unit; Centro Nazionale di Adroterapia Oncologica; Pavia Italy
5. Department of Experimental and Clinical Medicine; Magna Graecia University; Catanzaro Italy
6. Medical Physics Unit; Centro Nazionale di Adroterapia Oncologica; Pavia Italy
7. Department of Radiation Oncology; Sant'Anna Hospital; Como Italy
8. Department of Radiation Oncology; European Institute of Oncology; Milano Italy
9. Department of Health Sciences; Università degli Studi di Milano; Milano Italy