1 Department of Hematology, University Hospital of Salamanca (HUS/IBSAL), CIBERONC and Cancer Research Institute of Salamanca-IBMCC (USAL-CSIC), Salamanca, Spain.
2 Department of Hematology, Central University Hospital of Asturias (HUCA), Oviedo, Spain.
3 Department of Pathology, University Hospital of Salamanca (HUS/IBSAL), Salamanca, Spain.
4 Department of Nuclear Medicine, University Hospital of Salamanca (HUS/IBSAL), Salamanca, Spain.
5 Department of Otorhinolaryngology, University Hospital of Salamanca (HUS/IBSAL), Salamanca, Spain.
6 Department of General and Gastrointestinal Surgery, University Hospital of Salamanca (HUS/IBSAL), Salamanca, Spain.
7 Department of Hematology, University Hospital of Salamanca (HUS/IBSAL), CIBERONC and Cancer Research Institute of Salamanca-IBMCC (USAL-CSIC), Salamanca, Spain. rgarcias@usal.es.