
Keywords: OCD, obsessive compulsive disorder; ECA, Epidemiological Catchment Area; Y-BOCS, Yale-Brown Obsessive Compulsive Scale; OFC, orbito-frontal cortex; 5-HT, serotonin; OCD-D, pure OCD; OCD + D, OCD and depression; DST, dexamethasone suppression test; ACC, an