PDLIM7 and cancer: EBER RNA expression according to the anatomic localization of HNSCC and presence of EBV DNA (PCR), multiple- or single types of HPV (HR- or LR type) or HSV-1 by PCR. Percentages given in parentheses present the positivity calculated from the total number of samples. The results of LMP-1 immunostaining are given as the number of cases with positive staining present in over 50% of the cancer cells