Hattori, E., Liu, C., Badner, J.A., Bonner, T.I., Christian, S.L., Maheshwari, M., Detera-Wadleigh, S.D., Gibbs, R.A. and Gershon, E.S. (2003) Polymorphisms at the G72/G30 gene locus, on 13q33, are associated with bipolar disorder in two independent pedig