1 Department of Pathology, Medical School, University of Valencia-INCLIVA Biomedical Health Research Institute, 46010 Valencia, Spain.
2 Low Prevalence Tumors, Center for Biomedical Research in Cancer Network (CIBERONC), Carlos III Health Institute, 28029 Madrid, Spain.
3 Department of Pathology, Verge de la Cinta Hospital of Tortosa, Catalan Institute of Health, Institut d'Investigació Sanitària Pere Virgili (IISPV), 43500 Tortosa, Spain.
4 Department of Morphological Science, Medical School, Rovira i Virgili University, 43201 Reus, Spain.