Comorbidity of Alcohol Dependence With Attention-Deficit Hyperactivity Disorder: Differences in Phenotype With Increased Severity of the Substance Disorder, but Not in Genotype (Serotonin Transporter and 5-Hydroxytryptamine-2c Receptor). - Johann,M.; Bobbe,G.; Putzhammer,A.; Wodarz,N. (Alcohol Clin Exp Res, 2003)