title: [A fundamental biologic rhythm].
authors.forename: M
authors.initials: M
authors.lastname: Zumaglini
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D002940:Circadian Rhythm / Q000502:physiology*; D006801:Humans; D007231:Infant, Newborn; D012890:Sleep / Q000502:physiology*; D013997:Time Factors