1 Department of Physical Medicine & Rehabilitation, Spaulding Rehabilitation Hospital, 300 1st Avenue, Charlestown, MA 02129, USA.
2 Department of Health Law, Policy, and Management, Boston University School of Public Health, 715 Albany Street, Boston, MA 02118, USA.
3 Department of Surgery, The University of Washington, 1959 NE Pacific St, Seattle, WA 98195, USA.
4 Department of Physical Medicine and Rehabilitation, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA.
5 Department of Physical Medicine & Rehabilitation, Spaulding Rehabilitation Hospital, 300 1st Avenue, Charlestown, MA 02129, USA; Department of Health Law, Policy, and Management, Boston University School of Public Health, 715 Albany Street, Boston, MA 02118, USA; Rehabilitation Outcomes Center at Spaulding, Spaulding Rehabilitation, 300 1st Avenue, Charlestown, MA, 02129, USA.
6 Department of Surgery, Massachusetts General Hospital, 55 Fruit Street, Boston, MA 02114, USA; Department of Surgery, Shriners Children's, 51 Blossom Street, Boston, MA 02114, USA; Harvard Medical School, 25 Shattuck Street, Boston, MA 02115, USA.
7 Department of Physical Medicine & Rehabilitation, Spaulding Rehabilitation Hospital, 300 1st Avenue, Charlestown, MA 02129, USA; Rehabilitation Outcomes Center at Spaulding, Spaulding Rehabilitation, 300 1st Avenue, Charlestown, MA, 02129, USA; Department of Physical Medicine and Rehabilitation, Massachusetts General Hospital, 55 Fruit Street, Boston, MA 02114, USA; Harvard Medical School, 25 Shattuck Street, Boston, MA 02115, USA. Electronic address: jcschneider@partners.org.