1. Biomedical Research in Cancer Stem Cells Group, Vall d’Hebron Research Institute (VHIR), Universitat Autònoma de Barcelona, Passeig Vall d´Hebron, Barcelona, Spain
2. Otorhinolaryngology Department, Hospital Vall d´Hebron (HUVH), Passeig Vall d´Hebron, Barcelona, Spain
3. Biomedical Research Group of Urology, Vall d’Hebron Research Institute (VHIR), Universitat Autònoma de Barcelona, Passeig Vall d´Hebron, Barcelona, Spain
4. Spanish Biomedical Research Network Centre in Oncology, CIBERONC, Madrid, Spain