Nirmala N. Nayak, MD a, ⁎ , Kamala Shankar, MD b, c, d
a Department of Physical Medicine and Rehabilitation (117), Veterans Affairs Northern California Health Care System, 150 Muir Road, Martinez, CA 94553, USA
b Department of Physical Medicine and Rehabilitation (117), Veterans Affairs Palo Alto Health Care System, 3801 Miranda Avenue, Palo Alto, CA 94404, USA
c Functional Restoration Department, Stanford University Medical Center, Stanford, CA, USA
d Department of Physical Medicine and Rehabilitation, University of California, Davis, School of Medicine, Davis, CA, USA