3DE JONG M J, RANDALL D C. Heart rate variability analysis in the assessment of autonomic function in heart failure [J]. J Cardiovasc Nurs, 2005, 20 (3) : 186-195.
4AYDIN M, ALTIN R, OZEREN A, et al. Cardiac autonomic activity in obstructive sleep apnea: time-dependent and spectral analysis of heart rate variability using 24-hour Holter electrocardiograms [J]. Tex Heart Iost J, 2004, 31 (2) : 132-136.