Multiple distinct risk loci for nicotine dependence identified by dense coverage of the complete family of nicotinic receptor subunit (CHRN) genes

Nancy L. Saccone, Scott F. Saccone, Anthony L. Hinrichs, Jerry A. Stitzel, Weimin Duan, Michele L. Pergadia, Arpana Agrawal, Naomi Breslau, Richard A. Grucza, Dorothy Hatsukami, Eric O. Johnson, Pamela A.F. Madden, Gary E. Swan, Jen C. Wang, Alison M. Goate, John P. Rice, Laura J. Bierut