Serotonin transporter promoter region gene polymorphism as a genetic support for the obsessive-compulsive spectrum - Baca-Garcia, E; Rodriguez-Salgado, B; Dolengevich-Segal, H; Vaquero-Lorenzo, C; Fernandez-Piqueras, J; Diaz-Hernandez, M; de León, J; Saiz-Ruiz, J (BIOLOGICAL PSYCHIATRY, 2003)