![Heart rate variability following coronary artery bypass graft surgery as a function of recovery time, posture, and exercise]()
Heart rate variability following coronary artery bypass graft surgery as a function of recovery time, posture, and exerciseBrown, C Ann; Wolfe, Larry A; Hains, Sylvia; Ropchan, Glorianne; Parlow, Joel · Canadian Journal of Physiology and Pharmacology · 2004