title: [Recent advances in sleep medicine].
authors.affiliation: Division of Respiratory Medicine, Hokkaido University Graduate School of Medicine, Sapporo 060-8638, Japan.
authors.forename: Masaharu
authors.initials: M
authors.lastname: Nishimura
authors.forename: Shigeru
authors.initials: S
authors.lastname: Chiba
mesh_terms: D002940:Circadian Rhythm; D006801:Humans; D012890:Sleep / Q000502:physiology*; D012894:Sleep Stages; D012893:Sleep Wake Disorders / Q000145:classification