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Median Base-Line Characteristics of the Participants, According to Whether They Received Alpha-Tocopherol and Beta Carotene. Beta Carotene Cancer Prevention Study Group The Alpha-Tocopherol, N Engl J Med 1994;330:1029-1035.
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Median Base-Line Characteristics of the Participants, According to Whether They Received Alpha-Tocopherol and Beta Carotene Beta Carotene Cancer Prevention Study Group The Alpha-Tocopherol, N Engl J Med 1994;330:1029-1035