296, Issue 4. ↑ New York Daily News (William Sherman) Test targets addiction gene 11 February 2006 ↑ Berggren U, Fahlke C, Aronsson E, Karanti A, Eriksson M, Blennow K, Thelle D, Zetterberg H, Balldin J (September 2006). "The taqI DRD2 A1 allele is associated with alcohol-dependence although its effect size is small" (Free full text).