title: [The circadian variability of the rhythm of cardiac activity in healthy schoolchildren].
authors.forename: O O
authors.initials: OO
authors.lastname: Kupriianova
authors.forename: I G
authors.initials: IG
authors.lastname: Nidekker
authors.forename: O V
authors.initials: OV
authors.lastname: Kozhevnikova
authors.forename: L P
authors.initials: LP
authors.lastname: Meshcheriakov
mesh_terms: D000293:Adolescent; D000375:Aging / Q000502:physiology; D002648:Child; D002940:Circadian Rhythm / Q000502:physiology*; D015716:Electrocardiography, Ambulatory / Q000706:statistics & numerical data; D005260:Female; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D008297:Male; D009031:Moscow; D018579:Patient Selection; D012016:Reference Values; D012727:Sex Characteristics; D012815:Signal Processing, Computer-Assisted; D014505:Urban Population