?:authorAffiliation
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[\'Department of Addictive Behavior and Addiction Medicine, Medical Faculty, LVR-Hospital Essen, University of Duisburg-Essen, Virchowstrasse 174, D-45147 Essen, Germany.\', \'Clinic for Psychosomatic Medicine and Psychotherapy, LVR University Hospital Essen, University of Duisburg-Essen, Virchowstrasse 174, D-45147 Essen, Germany.\']
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