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Table 3.6 Retention and extraction of ventilation tubes.AuthorYearReferenceCountryStudy designPatientpopulationInterventionControlEl-Bitar et al2002[175]USARetrospectiveCCTn=126Age: 2.5–14 yearsGroup 1:n=67Age: 7 years,VT retention time: 2.0–10.5 years (mean 4.5 years)182Rörbehandling vid inflammation i mellanörat

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