title: Dr Chengappa and colleagues reply.
authors.affiliation: chengappakn@upmc.edu.
authors.forename: K N Roy
authors.initials: KN
authors.lastname: Chengappa
authors.forename: Kenneth A
authors.initials: KA
authors.lastname: Perkins
authors.forename: Jaspreet S
authors.initials: JS
authors.lastname: Brar
authors.forename: Scott R
authors.initials: SR
authors.lastname: Turkin
authors.forename: Michelle D
authors.initials: MD
authors.lastname: Levine
authors.forename: Tony P
authors.initials: TP
authors.lastname: George
mesh_terms: D001552:Benzazepines / Q000494:pharmacology*; D001714:Bipolar Disorder / Q000188:drug therapy*; D005260:Female; D006801:Humans; D008297:Male; D018722:Nicotinic Agonists / Q000494:pharmacology*; D011810:Quinoxalines / Q000494:pharmacology*; D012907:Smoking / Q000188:drug therapy*; D016540:Smoking Cessation / Q000379:methods*
chemical_list: D001552:Benzazepines; D018722:Nicotinic Agonists; D011810:Quinoxalines