title: Meta-analysis of the symptom structure of obsessive-compulsive disorder.
mesh_terms: D039721:Diagnostic and Statistical Manual of Mental Disorders; D005163:Factor Analysis, Statistical; D006801:Humans; D038801:International Classification of Diseases; D009771:Obsessive-Compulsive Disorder / Q000175:diagnosis* / Q000523:psychology*; D012720:Severity of Illness Index; D011795:Surveys and Questionnaires