title: [Circadian clocks and photoperiodism].
authors.affiliation: Department of Clinical Chemistry and Laboratory Medicine, Graduate School of Medical Sciences, Kyushu University.
authors.forename: Mariko
authors.initials: M
authors.lastname: Sawa
authors.forename: Steve A
authors.initials: SA
authors.lastname: Kay
mesh_terms: D000818:Animals; D057906:Circadian Clocks / Q000502:physiology*; D006801:Humans; D017440:Photoperiod