We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleThe PHQ-9: validity of a brief depression severity measure.AuthorsKroenke K; Spitzer RL; Williams JBPublicationJournal of general internal medicine, 2001, Vol 16, Issue 9, p606ISSN0884-8734Publication typearticleDOI10.1046/j.1525-1497.2001.016009606.x