4[4]Cone E J, Preston KL.Toxicologic aspects of heroin substitution treatment[J].Ther Drug Monit, 2002,24(2):193.
5[5]de Jong DJ,Derijks LJ,Naber AH, et al. Safety of thiopurines in the treatment of inflammatory bowel disease[J].Scand J Gastroenterol Suppl, 2003,239: 69.
6[6]Holt DW.Therapeutic drug monitoring of immunosuppressive drugs in kidney transplantation[J].Curr Opin Nephrol Hypertens,2002,11(6):657.