@article{campbell_2000,  title={Metformin and the united kingdom prospective diabetes study: a commentary},  volume={44},  ISSN={0004-2730},  url={https://doi.org/10.1590/S0004-27302000000200003},  DOI={10.1590/S0004-27302000000200003},  number={2},  journal={Arquivos Brasileiros de Endocrinologia & Metabologia},  publisher={Sociedade Brasileira de Endocrinologia e Metabologia},  author={Campbell, Ian W.},  year={2000},  month={Apr},  pages={121–124} }