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Assessment of vitamin B <sub>12</sub> deficiency and B <sub>12</sub> screening trends for patients on metformin: a retrospective cohort case review

Crossref DOI link: https://doi.org/10.1136/bmjnph-2020-000193

Published Online: 2021-01-04

Published Print: 2021-06

Update policy: https://doi.org/10.1136/crossmarkpolicy

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