title: Re: Groll et al.--Comparison of IBS-36 and IBS-QOL instruments.
authors.forename: Donald L
authors.initials: DL
authors.lastname: Patrick
authors.forename: Douglas A
authors.initials: DA
authors.lastname: Drossman
mesh_terms: D003109:Colonic Diseases, Functional / Q000503:physiopathology* / Q000523:psychology*; D006801:Humans; D011594:Psychometrics / Q000379:methods; D011788:Quality of Life; D011795:Surveys and Questionnaires