The relationship of 5HTT (SLC6A4) methylation and genotype on mRNA expression and liability to major depression and alcohol dependence in subjects from the Iowa Adoption Studies - Philibert, RA; Sandhu, H; Hollenbeck, N; Gunter, T; Adams, W; Madan, A (American Journal of Medical Genetics Part B: Neuropsychiatric Genetics, 2008)