1. Instituto de Biomedicina y Biotecnología de Cantabria (IBBTEC), Consejo Superior de Investigaciones Científicas (CSIC) - Universidad de Cantabria, Santander 39011, Spain.
2. Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Instituto de Salud Carlos III, Madrid 28029, Spain.
3. Department of Laboratory Medicine, National Institutes of Health, Bethesda, MD 20892, USA.
4. Centro de Investigación del Cáncer and Instituto de Biología Molecular y Celular del Cáncer, CSIC-Universidad de Salamanca, Salamanca 37007, Spain.
5. Edinburgh Cancer Research UK Centre, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, UK.
6. Department of Medicine, Georgetown University, 3700 O St NW, Washington, DC 20057, USA.
7. Department of Pathology, George Washington University, 2121 I St NW, Washington, DC 20052, USA.
8. University of Cape Town, UCT Faculty of Health Sciences, Barnard Fuller Building, Anzio Rd, Observatory, Cape Town, 7935 South Africa.