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Letter to the Editor

How useful are ‘add-on’ questions in questionnaires?

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Pages 47-48 | Accepted 29 Dec 2010, Published online: 07 Feb 2011

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Vinaya Manchaiah, Gerhard Andersson, Marc A. Fagelson, Ryan L. Boyd & Eldré W. Beukes. (2022) Use of open-ended questionnaires to examine the effects of tinnitus and its relation to patient-reported outcome measures. International Journal of Audiology 61:7, pages 592-599.
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