title: President's address. Tympanosclerosis.
mesh_terms: D003094:Collagen; D003638:Deafness / Q000209:etiology*; D004427:Ear Diseases / Q000175:diagnosis* / Q000473:pathology* / Q000628:therapy*; D004429:Ear Ossicles / Q000503:physiopathology*; D004432:Ear, Middle / Q000473:pathology*; D006801:Humans; D010033:Otitis Media / Q000150:complications*; D012598:Sclerosis; D013201:Stapes Surgery; D014432:Tympanic Membrane / Q000473:pathology*
chemical_list: D003094:Collagen