Nishizawa, D., Han, W., Hasegawa, J., Ishida, T., Numata, Y., Sato, T., Kawai, A. and Ikeda, K.: Association of mu-opioid receotor gene polymorphism A118G with alcohol dependence in a Japanese population. Neuropsychobiology., 53: 137-141, 2006.
Pickens, R. W., Svikis, D. S., McGue, M., Lykken, D. T., Heston, L. L. and Clayton, P. J.: Heterogeneity in the inheritance of alcoholism: a study of male and female twins. Arch. Gen. Psychiatry., 48: 19-28, 1991.
Saraswathy, K. N., Asghar, M., Samtani, R., Murry, B., Mondal, P. R., Ghosh, P. K. and Sachdeva, M. P.: Spectrum of MTHFR gene SNPs C677T and A1298C: a study among 23 population groups of India. Mol. Biol. Rep., 39: 5025-5031, 2011.
Friso, S., Choi, S. W., Girelli, D., Mason, J. B., Dolnikowski, G. G., Bagley, P. J., Olivieri, O., Jacques, P. F., Rosenberg, I. H., Corrocher, R. and Selhub, J.: A common mutation in the 5,10-methylenete-trahydrofolate reductase gene affects genomic DNA methylation through an interaction with folate status. Proc. Natl. Acad. Sci. U.S.A., 99: 5606-5611, 2002.
Frosst, P., Blom, H. J., Milos, R., Goyette, P., Sheppard, C. A., Matthews, R. G., Boers, G. J., den Heijer, M., Kluijtmans, L. A. and van den Heuvel, L. P.: A candidate genetic risk factor vascular disease: a common mutation in methylenetetrahydrofolate reductase. Nat. Genet., 10: 111-113, 1995.