1 From the Department of Physical Medicine and Rehabilitation, JFK Johnson Rehabilitation Institute, Edison, New Jersey (YZ, MC, LL, SJC); Rutgers Robert Wood Johnson Medical School, New Brunswick, New Jersey (YZ, MC, LL, SJC); Department of Pathology and Laboratory Medicine, New Jersey Medical School, Newark, New Jersey (AB-dL); and Department of Pathology, Kaiser Permanente Modesto Medical Center, Modesto, California (JL).