Assessment and Therapeutic Modulation of Heart Rate Variability: Potential Implications in Patients with COVID-19. - Schnekenberg L; Sedghi A; Schoene D; Pallesen LP; Barlinn J; Woitek F; Linke A; Puetz V; Barlinn K; Mangner N; Siepmann T (Journal of cardiovascular development and disease, 2023)