@article{Knoll_1999,
 title={Tacrolimus versus cyclosporin for immunosuppression in renal transplantation: meta-analysis of randomised trials},
 volume={318},
 ISSN={1468-5833},
 url={http://dx.doi.org/10.1136/bmj.318.7191.1104},
 DOI={10.1136/bmj.318.7191.1104},
 number={7191},
 journal={BMJ},
 publisher={BMJ},
 author={Knoll,
 G. A and Bell,
 R. C},
 year={1999},
 month=apr,
 pages={1104–1107} }