TY  - RPRT
TI  - Metformin and B 12 malabsorption.
AU  - G H Tomkin
PY  - 1972
DO  - 10.7326/0003-4819-76-4-668_1
UR  - https://pubmed.ncbi.nlm.nih.gov/4640327/
ID  - 4640327
ER  -