[Changes in the frequency of cardiac contractions with the hour of the day in children from birth till 18 years of age].
D000293:Adolescent; D000375:Aging; D002648:Child; D002675:Child, Preschool; D002940:Circadian Rhythm; D005260:Female; D006339:Heart Rate; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male
Izmenenie chastoty serdechnykh sokrashchenii po chasam sutok u detei ot rozhdeniia do 18 let.