1 Medical Oncology Department, Miguel Servet University Hospital, Zaragoza, Spain; Facultad de Medicina, University of Zaragoza, Zaragoza, Spain. Electronic address: aartalc@salud.aragon.es.
2 Medical Oncology Department, Miguel Servet University Hospital, Zaragoza, Spain.
3 Medical Oncology Department, Miguel Servet University Hospital, Zaragoza, Spain; Facultad de Medicina, University of Zaragoza, Zaragoza, Spain.