1. Keck School of Medicine of University of Southern California , Los Angeles, CA 90033 , USA
2. Department of Rehabilitation Medicine, University of Washington , Seattle, WA 98104 , USA
3. Division of Plastic and Reconstructive Surgery, University of Southern California , Los Angeles, CA 90033 , USA
4. Department of Psychiatry and the Behavioral Sciences, University of Southern California , Los Angeles, CA 90033 , USA
5. Department of Surgery, The University of Texas Southwestern Medical Center , Dallas, TX 78712 , USA
6. Department of Surgery, University of Washington , Seattle, WA 98104 , USA
7. Department of Physical Medicine and Rehabilitation, Harvard Medical School, Spaulding Rehabilitation Hospital , Boston, MA 02129 , USA