title: Sleep and biological rhythms in man: a twin study.
authors.affiliation: Hôpital Erasme, Université Libre de Bruxelles, Belgium.
authors.forename: P
authors.initials: P
authors.lastname: Linkowski
authors.forename: M
authors.initials: M
authors.lastname: Kerkhofs
authors.forename: E
authors.initials: E
authors.lastname: Van Cauter
mesh_terms: D006801:Humans; D010507:Periodicity; D012890:Sleep / Q000502:physiology*; D014427:Twins