Fig. 2

Survival of patients with OSCC and OPSCC by HPV DNA, P16 expression. A–C Survival of patients with tumors positive and negative for HPV DNA status. Disease-free survival (A) and Overall survival (C). B–D Survival of patients with P16(+++) and P16(-~++) tumors by immunohistochemistry. Disease-free survival (B) and Overall survival (D).