title: Update from the 4th Edition of the World Health Organization Classification of Head and Neck Tumours: Preface.
authors.affiliation: Department of Pathology and Laboratory Medicine,, University of Pittsburgh, Pittsburgh, PA, USA. seethalarr@upmc.edu.
authors.forename: Raja R
authors.initials: RR
authors.lastname: Seethala
mesh_terms: D006258:Head and Neck Neoplasms / Q000145:classification*; D006801:Humans; D014944:World Health Organization