The Expert Panel Members' (n = 9) Agreement on the Items in the Visual Analogue Scale for Irritable Bowel Syndrome (VAS-IBS) Concerning Content Validity (Relevance and Definition) and Acceptability of ...
Background: The aim of this study was to develop and psychometrically test a short, patient-reported questionnaire to be used in clinical practice for patients with Irritable Bowel Syndrome (IBS). The ...