1. Department of Cytokine Biology, Forsyth Institute, Boston, Massachusetts.
2. Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, Massachusetts.
3. Department of Cell Biology, Biology Institute, Brasilia University, Brasilia, Brazil.
4. Spauling-Harvard Spinal Cord Injury Model System, Spaulding Rehabilitation Hospital, Boston, Massachusetts.
5. Pulmonary and Critical Care Medicine Section, Medical Service, VA Boston Healthcare System, Boston, Massachusetts.
6. Channing Laboratory, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts.
7. Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, Massachusetts.