1. From the School of Health and Rehabilitation Sciences, Department of Physical Therapy, Massachusetts General Hospital Institute for Health Professions, Boston (T.J.K.)
2. Division of Physical Therapy, Department of Rehabilitation Medicine, University of Minnesota, Minneapolis (T.J.K., C.N.P., D.K.K.)
3. MicroTransponder, Inc, Austin, TX (D.P., C.N.P., B.T., N.D.E.)
4. Department of Physical Medicine and Rehabilitation, University of Texas Health Science Center at Houston McGovern Medical School (G.E.F., N.Y.)
5. The NeuroRecovery Research Center at TIRR Memorial Hermann (G.E.F., N.Y.)
6. Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas (P.S., J.G.W.)
7. Institute of Cardiovascular and Medical Sciences, College of Medical, Veterinary, and Life Sciences, Queen Elizabeth University Hospital, University of Glasgow, United Kingdom (D.A.D., J.D.)
8. Tx Biomedical Device Center at The University of Texas at Dallas (J.G.W.)
9. Department of Neurology, University of California, Irvine (S.C.C.).