Psychometric validation of the German translation of the Gastrointestinal Symptom Rating Scale (GSRS) and Quality of Life in Reflux and Dyspepsia (QOLRAD) questionnaire in patients...

by Kulich, Károly R, Malfertheiner, Peter, Madisch, Ahmed, Labenz, Joachim, Bayerdörffer, Ekkehard, Miehlke, Stephan, Carlsson, Jonas, Wiklund, Ingela K
Published 2003