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Leeb, B.F. Should Folate Supplementation be Routinely Recommended for Older Patients Receiving Methotrexate. Drugs & Aging 5, 319–322 (1994). https://doi.org/10.2165/00002512-199405050-00001
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DOI: https://doi.org/10.2165/00002512-199405050-00001