P-25 Socioeconomic inequality in survival after oropharynx cancer according to HPV-status: the impact of stage, smoking and comorbidity – a nationwide study from DAHANCA. (July 2021) - Olsen, M.H.; Lassen, P.; Rotboel, C.; Kjær, T.K.; Frederiksen, K.; Overgaard, J.; Dalton, S.O.; ,