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2. General Household Survey. The Prevalence of Tinnitus 1981;Office of Population Censuses and Survey's,1983
3. Prevalence estimates of communicative disorder in the US: language, hearing and vestibular disorders;Leske;Asha,1981
4. Epidemiology of tinnitus: an update;Smith,1987
5. Characteristics of tinnitus and related observations in over 1800 tinnitus clinic patients;Meikle,1984