1 From the Department of Physical Medicine and Rehabilitation, Metropolitan Hospital, New York, New York (MC, NM, NT, MI, RK, ELA); University of Texas Medical Branch, Galveston, Texas (MT); School of Medicine, New York Medical College, Valhalla, New York (MB); Department of Rehabilitation Medicine, New York Medical College, Valhalla, New York (MI, ELA); and National Seating And Mobility, Bronx, New York (NR).