(Q48738457)
Statements
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Do plasma melatonin concentrations decline with age? (English)
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J M Zeitzer
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J E Daniels
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J F Duffy
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E B Klerman
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T L Shanahan
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D J Dijk
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C A Czeisler
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1 November 1999
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107
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5
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432-436
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Identifiers
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