No abstract available
MeSH terms
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Arthritis, Rheumatoid / diagnosis
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Biopsy
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Dermatomyositis / diagnosis
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Diagnosis, Differential
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Electromyography
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Humans
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Lupus Erythematosus, Systemic / diagnosis
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Muscles / pathology
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Myositis / classification
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Myositis / diagnosis*
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Myositis / pathology
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Polyneuropathies / diagnosis
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Scleroderma, Systemic / diagnosis