Davies, M. H., Elias, E., Acharya, S., Cotton, W., Faulder, G. C., Fryer, A. A., & Strange, R. C. (1993). GSTM1 null polymorphism at the glutathione S-transferase M1 locus: phenotype and genotype studies in patients with primary biliary cirrhosis. Gut, 34(4), https://doi.org/10.1136/gut.34.4.549