COMTVal158Met polymorphism is associated with ecstasy (MDMA)-induced psychotic symptoms in the Turkish population

From the Department of Psychiatry (Aytac), Basaksehir Cam and Sakura City Hospital; Department of Medical Biology (Oyaci, Pehlivan), Istanbul Faculty of Medicine, Istanbul University, and from the Department of Psychiatry (Cetinay Aydin), Bakirkoy Research and Training Hospital for Psychiatry, Neurology and Neurosurgery, Psychiatry Clinic, University of Health Sciences, Istanbul, and from the Department of Hematology (Pehlivan), Gaziantep University, Faculty of Medicine, Gaziantep, Turkey

From the Department of Psychiatry (Aytac), Basaksehir Cam and Sakura City Hospital; Department of Medical Biology (Oyaci, Pehlivan), Istanbul Faculty of Medicine, Istanbul University, and from the Department of Psychiatry (Cetinay Aydin), Bakirkoy Research and Training Hospital for Psychiatry, Neurology and Neurosurgery, Psychiatry Clinic, University of Health Sciences, Istanbul, and from the Department of Hematology (Pehlivan), Gaziantep University, Faculty of Medicine, Gaziantep, Turkey

From the Department of Psychiatry (Aytac), Basaksehir Cam and Sakura City Hospital; Department of Medical Biology (Oyaci, Pehlivan), Istanbul Faculty of Medicine, Istanbul University, and from the Department of Psychiatry (Cetinay Aydin), Bakirkoy Research and Training Hospital for Psychiatry, Neurology and Neurosurgery, Psychiatry Clinic, University of Health Sciences, Istanbul, and from the Department of Hematology (Pehlivan), Gaziantep University, Faculty of Medicine, Gaziantep, Turkey

From the Department of Psychiatry (Aytac), Basaksehir Cam and Sakura City Hospital; Department of Medical Biology (Oyaci, Pehlivan), Istanbul Faculty of Medicine, Istanbul University, and from the Department of Psychiatry (Cetinay Aydin), Bakirkoy Research and Training Hospital for Psychiatry, Neurology and Neurosurgery, Psychiatry Clinic, University of Health Sciences, Istanbul, and from the Department of Hematology (Pehlivan), Gaziantep University, Faculty of Medicine, Gaziantep, Turkey

From the Department of Psychiatry (Aytac), Basaksehir Cam and Sakura City Hospital; Department of Medical Biology (Oyaci, Pehlivan), Istanbul Faculty of Medicine, Istanbul University, and from the Department of Psychiatry (Cetinay Aydin), Bakirkoy Research and Training Hospital for Psychiatry, Neurology and Neurosurgery, Psychiatry Clinic, University of Health Sciences, Istanbul, and from the Department of Hematology (Pehlivan), Gaziantep University, Faculty of Medicine, Gaziantep, Turkey