1 Medical Oncology Department, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria San Carlos (IdISSC), CIBERONC, Madrid, Spain. jgsaenz@salud.madrid.org.
2 Hospital Universitario San Cecilio, Instituto de Investigación Biosanitaria de Granada (Ibs.Granada) and Medicine Departmen, Granada University, Granada, Spain.
3 Hospital General Universitario Gregorio Marañón, Instituto de Investigación Sanitaria Gregorio Marañon (IiSGM), CIBERONC, Madrid, Spain.
4 Hospital Universitario Marqués de Valdecilla, Santander, Spain.
5 Institut Català d'Oncologia (ICO)-Badalona (Hospital Germans Trias i Pujol), B-ARGO (Badalona Applied Research Group in Oncology) and CARE (Translational Program in Cancer Research), Badalona, Spain.
6 Medical Oncology Department, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria San Carlos (IdISSC), CIBERONC, Madrid, Spain.
7 Institut Català d'Oncologia (ICO)-L'Hospitalet, Institut d'Investigacio Biomedica de Bellvitge (IDIBELL), L'Hospitalet de Llobregat, Barcelona, Spain.
8 Hospital de la Santa Creu i Sant Pau, Barcelona, Spain.
9 UGCI Oncología Intercentros, Hospitales Universitarios Regional y Virgen de la Victoria (IBIMA), Málaga, Spain.
10 Hospital Universitario Vall D'Hebron, and Vall d'Hebron Institute of Oncology (VHIO), Barcelona, Spain.