title: [Introduction to the reference issue 20150].
authors: Werner
authors: W
authors: Hosemann
mesh_terms: D005858:Germany; D006801:Humans; D010036:Otolaryngology; D010254:Paranasal Sinus Diseases / Q000601:surgery*; D019291:Skull Base / Q000601:surgery*; D012955:Societies, Medical; D003226:Congresses as Topic