- Hepatocyte nuclear factor-4 alpha/gamma and hepatocyte nuclear factor-1 alpha as causal factors of interindividual difference in the expression of human dihydrodiol dehydrogenase 4 mRNA in human livers. Ozeki, T., Takahashi, Y., Nakayama, K., Funayama, M., Nagashima, K., Kodama, T., Kamataki, T. Pharmacogenetics (2003)