Sanguineti, G. et al. 2014. HPV-related oropharyngeal carcinoma with Overt Level II and/or III metastases at presentation: The risk of subclinical disease in ipsilateral levels IB, IV and V. Acta Oncologica. 53, 5 (May 2014), 662–668. DOI:https://doi.org/10.3109/0284186X.2013.858825.