1. Camm AJ, Malik M, Bigger JT, et al. Heart rate variability: standards of measurement, physiological interpretation and clinical use. Task Force of the European Society of Cardiology and the North American Society of Pacing and Electrophysiology. Circulation. 1996;93–5:1043–65.
2. Thayer JF, Yamamoto SS, Brosschotc JF. The relationship of autonomic imbalance, heart rate variability and cardiovascular disease risk factors. Int J Cardiol. 2010;141(2):122–31.
3. Singh JP, Larson MG, Tsuji H, Evans JC, O’Donnell CJ, Levy D. Reduced heart rate variability and new-onset hypertension. Hypertension. 1998;32(2):293–7.
4. Schroeder EB, Chambless LE, Liao D, Prineas RJ, Evans GW, Rosamond D, Heiss G. Diabetes, glucose, insulin, and heart rate variability -the atherosclerosis risk in communities (ARIC) study. Diabetes Care. 2005;28(3):668–74.
5. Taelman J, Vandeput S, Spaepen A, Van Huffel S. Influence of mental stress on heart rate and heart rate variability. In: 4th European Conference of the International Federation for Medical and Biological Engineering. 2009. p. 1366–9.