[1] Univ Valencia, Consorcio Hosp Gen Univ Valencia, Dept Med, Valencia, Spain
[2] Univ San Carlos, Hosp Clin, Madrid, Spain
[3] Univ Santiago Compostela, Hosp Clin, Santiago De Compostela, Spain
[4] Ramon & Cajal Univ Hosp, Dept Med Oncol, Madrid, Spain
[5] Fundacio Clin, Barcelona, Spain
[6] Hosp Sanitas La Moraleja, Madrid, Spain
[7] IVO, Valencia, Spain