(Q42481535)
Statements
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A clinical trial of beta carotene to prevent basal-cell and squamous-cell cancers of the skin. The Skin Cancer Prevention Study Group (English)
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Stukel TA
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Greenberg ER
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Baron JA
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Stevens MM
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Mandel JS
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Spencer SK
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Elias PM
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Lowe N
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Nierenberg DW
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Bayrd G
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1 September 1990
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Identifiers
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