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Seasonal changes, sleep length and circadian preference among twins with bipolar disorder

Reeta Hakkarainen1, Carolina Johansson, Tuula Kieseppä

  • 1Department of Mental Health and Alcohol Research, National Public Health Institute, Helsinki, Finland. reeta.hakkarainen@ktl.fi

BMC Psychiatry
|June 11, 2003
PubMed
Abstract

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