HEART FAILURE BURDEN IN CHILDREN AND ADULTS WITH FRIEDREICH ATAXIA . Carol Wittlieb-Weber, Joseph Rossano, David Lynch, Kimberly Lin; Journal of the American College of Cardiology, Volume 63, Issue 12, Supplement, 1 April 2014, Pages A835; http://dx.doi.org/10.1016/S0735-1097(14)60835-4
"Attention to the degree of cardiac involvement is critical in the management of patients with FA."