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Jarczok, Marc N.; Koenig, Julian; Wittling, Arne; Fischer, Joachim E.; Thayer, Julian F. (2019). First Evaluation of an Index of Low Vagally-Mediated Heart Rate Variability as a Marker of Health Risks in Human Adults: Proof of Concept. Journal of Clinical Medicine, 8(11) MDPI 10.3390/jcm8111940
