Imbalanced

From the Department of Physical Medicine and Rehabilitation, University of Michigan Health Systems, Ann Arbor, Michigan. All correspondence and requests for reprints should be addressed to: James K. Richardson, MD, Department of Physical Medicine and Rehabilitation, University of Michigan Health Systems, 325 E Eisenhower Parkway, Suite 2000, Ann Arbor, MI 48018. James K. Richardson is a coinventor of the device measuring RTclin for which he holds a patent with James A. Ashton-Miller, James T. Eckner, and Hogene Kim (US Patent Number 8,657,295). There is presently no financial relationship, or pending relationship, of any kind associated with the patent or the device. Financial disclosure statements have been obtained, and no conflicts of interest have been reported by the authors or by any individuals in control of the content of this article.