Genetic risk for nicotine dependence in the cholinergic system and activation of the brain reward system in healthy adolescents - Nees, Frauke; Vollstädt-Klein, Sabine; Poustka, Luise; Banaschewski, Tobias; Mann, Karl; Rietschel, Marcella; Flor, Herta (Neuropsychopharmacology, 2013)