1. Tumor Markers Group, Spanish National Cancer Research Center, Madrid, Spain, Protein Unit, Spanish National Cancer Research Center, Madrid, Spain, Functional Proteomics Laboratory, Centro de Investigaciones Biologicas, Madrid, Spain, Bioinformatics Unit, Spanish National Cancer Research Center, Madrid, Spain, Biochemistry Department, Hospital Universitario de Salamanca, Salamanca, Spain, Pathology Department, Fundació Puigvert, Barcelona, Spain, and Oncology Department, Instituto Catalá d’Oncologia,...