1. Pathology Department, Hospital de Tortosa Verge de la Cinta, c/Esplanetes 14, 41300 Tortosa, Spain
2. Clinical Oncology Department, Hospital Universitario Virgen Macarena, Avda Dr Fedriani s/n, 41009 Sevilla, Spain
3. Pathology Department, Hospital Universitario Virgen Macarena, Avda Dr Fedriani s/n, 41009 Sevilla, Spain
4. Clinical Oncology Department, Hospital Universitario Puerta de Hierro, c/Manuel de Falla 1, 28222 Madrid, Spain