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Long-term use of proton pump inhibitors and vitamin B12 status in elderly individuals.
den Elzen WP, Groeneveld Y, de Ruijter W, Souverijn JH, le Cessie S, Assendelft WJ, Gussekloo J. den Elzen WP, et al. Among authors: groeneveld y. Aliment Pharmacol Ther. 2008 Mar 15;27(6):491-7. doi: 10.1111/j.1365-2036.2008.03601.x. Epub 2008 Jan 10. Aliment Pharmacol Ther. 2008. PMID: 18194503 Free article.
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