Wearable heart rate variability monitoring identifies autonomic dysfunction and thresholds for post-exertional malaise in Long COVID https://www.medrxiv.org/content/10.1101/2025.03.18.25320115v1 Rob WΓΌst et al. π³π± #HRV #PEM #AutonomicDysfunction #LongCOVID #ME/CFS
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