Universidad Autónoma de Madrid - Medical Oncology Department, Hospital Universitari Germans Trias i Pujol - Medical Oncology Department, Universidad Autónoma de Madrid - Medical Oncology Department, Hospital Universitario Cruces - Medical Oncology Department, Hospital Universitari Germans Trias i Pujol - Medical Oncology Department, Hospital Universitario de Navarra - Medical Oncology Department, Hospital Universitario de León - Medical Oncology Department, Hospital Universitari Germans Trias i Pujol - Medical Oncology Department, Hospital Universitari Son LLàtzer - Medical Oncology Department, - Medical Oncology Department, Instituto de Investigación Biomédica de A Coruña - Medical Oncology Department, Universidad Autónoma de Madrid - Medical Oncology Department, Hospital Universitario Cruces - Medical Oncology Department, Hospital de la Santa Creu i Sant Pau - Medical Oncology Department, Institut Català d'Oncologia - Medical Oncology Department, Hospital Universitario Fundación Alcorcón - Medical Oncology Department, Hospital General Universitario de Elche - Medical Oncology Department, Centre Hospitalier de la Côte Basque - Medical Oncology Department, Centre Hospitalier de la Côte Basque - Medical Oncology Department, Hospital Universitari Sant Joan de Reus - Medical Oncology Department, HM University Sanchinarro Hospital - Medical Oncology Department, Complejo Asistencial de Zamora - Medical Oncology Department, Hospital Universitario Severo Ochoa - Medical Oncology Department, Hospital Universiario Infanta Leonor - Medical Oncology Department, Hospital Universitario Lucus Augusti (HULA) - Medical Oncology Department, Hospital Universitario de Móstoles - Medical Oncology Department, Althaia, Xarxa Assistencial Universitària de Manresa - Medical Oncology Department, Hospital General de Segovia - Medical Oncology Department, Hospital General Universitario de Alicante - Medical Oncology Department and Hospital Universitario de Salamanca - Medical Oncology Department

Bellvitge University Hospital, affiliation not provided to SSRN, Hospital Universitario Virgen de la Victoria, Osakidetza Basque Health Service - Basurto University Hospital, affiliation not provided to SSRN, Hospital Universitario Central de Asturias, affiliation not provided to SSRN, affiliation not provided to SSRN, Hospital Universitari Germans Trias i Pujol - Medical Oncology Department, Hospital Clínico de Valladolid, Parc Taulí Hospital Universitari, affiliation not provided to SSRN, Hospital de A Coruña, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN and Universidad Autónoma de Madrid - Medical Oncology Department