*Department of Kinesiology, Occidental College, Los Angeles, California
†Department of Physical Medicine and Rehabilitation, School of Medicine, University of California, Davis, California
‡Medical Service, Department of Veterans Affairs, Northern California Health Care System, Mather, California
§Department of Medicine, School of Medicine, University of California, Davis, California.
Corresponding Author: David Siegel, MD, MPH, Medical Service (111), Department of Veterans Affairs, NCHCS, 10535 Hospital Way, Mather, CA 95655 ([email protected]).
The views expressed in the article do not necessarily represent the views of the Department of Veterans Affairs or of the US Government.
The authors report no conflicts of interest.
Received April 6, 2011
Accepted March 29, 2012