. Author manuscript; available in PMC: 2012 Oct 1.
Published in final edited form as: Arch Phys Med Rehabil. 2011 Oct;92(10 Suppl):S37–S43. doi: 10.1016/j.apmr.2011.01.026
© 2011 The American Congress of Rehabilitation Medicine. Published by Elsevier Inc. All rights reserved.