[Features of the variability of the cardiac circadian rhythm under conditions of free activity].
Makarov
L M
LM
D000293:Adolescent; D002940:Circadian Rhythm / Q000502:physiology*; D006339:Heart Rate / Q000502:physiology*; D006801:Humans
Osobennosti variabel'nosti tsirkadnogo ritma serdtsa u usloviiakh svobodnoĭ aktivnosti.