Reduced heart rate variability in chronic severe traumatic brain injury: Association with impaired emotional and social functioning, and potential for treatment using biofeedback
Neuropsychological Rehabilitation (2016) - Comment
pubmed: 25627984  doi: 10.1080/09602011.2014.1003246  issn: 1464-0694  issn: 0960-2011 

Heather M. Francis, Alana Fisher, Jacqueline A. Rushby, Skye McDonald