. Author manuscript; available in PMC: 2013 Sep 1.
Published in final edited form as: Osteoarthritis Cartilage. 2012 May 18;20(9):1011–1019. doi: 10.1016/j.joca.2012.05.004
© 2012 OsteoArthritis Society International. Published by Elsevier Ltd. All rights reserved.