[Variability in heart rhythm: approaches to mechanisms].
Kotel'nikov
S A
SA
Nozdrachev
A D
AD
Odinak
M M
MM
Shustov
E B
EB
Kovalenko
I Iu
IIu
Davydenko
V Iu
VIu
D004562:Electrocardiography; D006339:Heart Rate / Q000502:physiology*; D006801:Humans