No abstract available
MeSH terms
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Antirheumatic Agents / adverse effects*
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Antirheumatic Agents / therapeutic use
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Arthritis, Rheumatoid / drug therapy*
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Folic Acid / administration & dosage
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Folic Acid / therapeutic use*
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Gastrointestinal Diseases / chemically induced
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Gastrointestinal Diseases / prevention & control*
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Humans
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Leucovorin / administration & dosage
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Leucovorin / therapeutic use*
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Methotrexate / adverse effects*
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Methotrexate / therapeutic use
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Randomized Controlled Trials as Topic
Substances
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Antirheumatic Agents
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Folic Acid
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Leucovorin
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Methotrexate