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BackgroundHealth services research on medical care and treatment of allergic rhinitis (AR) is scarce.
ObjectivesTo investigate the prevalence, incidence, comorbidities, and treatment of AR in a realistic setting.
MethodsA cohort of 1 811 094 German National Health Insurance beneficiaries in 2005 was followed until 2011. To avoid misclassification, the ICD‐10 code for AR (J30) had to be documented...
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