Pamela C. Kruger, Karl X. Yang, Patrick J. Parsons, Alyssa B. Becker, Paul J. Feustel, Arnulf H. Koeppen. The American Journal of Cardiology, Available online 20 April 2016, ISSN 0002-9149, doi: 10.1016/j.amjcard.2016.04.024.
Total levels of Fe in bulk extracts were not significantly higher than normal, and the concentrations of Zn also remained in the normal range. Cu levels, however, were significantly lower in FA.
Abundance and Significance of Iron, Zinc, Copper, and Calcium in the Hearts of Patients with Friedreich Ataxia