1. Department of Physical Medicine and Rehabilitation, Vanderbilt University School of Medicine, Nashville, Tennessee2Department of Orthopaedics and Rehabilitation, Vanderbilt University School of Medicine, Nashville, Tennessee
2. Department of Biostatistics, Vanderbilt University School of Medicine, Nashville, Tennessee
3. Department of Orthopedic Surgery, Brigham and Women’s Hospital, Boston, Massachusetts5Harvard Medical School, Boston, Massachusetts
4. Harvard Medical School, Boston, Massachusetts6Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital, Boston, Massachusetts
5. Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital, Boston, Massachusetts
6. Harvard Medical School, Boston, Massachusetts7Channing Division of Network Medicine, Brigham and Women’s Hospital, Boston, Massachusetts8Pulmonary and Critical Care Medicine Section, Medical Service, VA Boston Healthcare System, Boston, Massachusetts