Oliveira RB, Myers J, Araújo CG, Arena R, Mandic S, Bensimhon D, Abella J, Chase P, Guazzi M, Brubaker P, Moore B, Kitzman D, Peberdy MA. Does peak oxygen pulse complement peak oxygen uptake in risk stratifying patients with heart failure? Am J Cardiol. 2009 Aug 15; 104(4):554-8.