1. CFGS Anatomic Pathology and Cytology; Instituto de Piedras Blancas 33450; Asturias Spain
2. Uniklinik RWTH Aachen; Pauwelsstraße 30 52074 Aachen Germany
3. Medical Oncology Departament; Complejo Hospitalario Universitario de A Coruña; As Xubias 15006 A Coruña Spain