@article{Ribeiro_2010, title={Défice de vitamina B12 associado ao uso de metformina - Devemo-nos preocupar?}, volume={26}, url={https://rpmgf.pt/ojs/index.php/rpmgf/article/view/10769}, DOI={10.32385/rpmgf.v26i4.10769}, number={4}, journal={Revista Portuguesa de Medicina Geral e Familiar}, author={Ribeiro, Cristiana}, year={2010}, month={Jul.}, pages={406–8} }