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Circadian rhythm of heart rate and heart rate variability.
Massin MM, Maeyns K, Withofs N, Ravet F, Gérard P. Massin MM, et al. Among authors: maeyns k. Arch Dis Child. 2000 Aug;83(2):179-82. doi: 10.1136/adc.83.2.179. Arch Dis Child. 2000. PMID: 10906034 Free PMC article.