1. Medical Physics and Radiation Protection Department Institut Català d'Oncologia Girona Spain
2. Department of Medical Sciences University of Girona Girona Spain
3. Department of Medical Physics Hospital Universitari Sant Joan de Reus, IISPV Tarragona Spain
4. Universitat Rovira i Virgili Tarragona Spain
5. Department of Radiation Oncology Hospital Clínic de Barcelona Barcelona Spain
6. Radiation Oncology Department Institut Català d'Oncologia Girona Spain