O5.2 Nodal involvement determines the initial quantity of circulating free HPV16 DNA in patients with HPV-related oropharyngeal cancer. (November 2022) - Rutkowski, T.; Mazurek, A.; Hebda, A.; Mrochem-Kwarciak, J.; Wawrzyniak, P.; Cortez, A.; Bobek-Billewicz, B.; Składowski, K.