No abstract available
MeSH terms
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Aminopterin*
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Black People*
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Carcinoma*
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Carcinoma, Squamous Cell*
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Diagnosis, Differential*
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Foot Diseases*
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Hand Dermatoses*
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Histocytochemistry*
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Humans
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Keratoacanthoma*
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Laryngeal Neoplasms*
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Methotrexate*
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Neoplasms / diagnosis*
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Pathology*
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Ultraviolet Rays*