Retrospective and prospective reporting of knee pain and disability among people with symptomatic knee osteoarthritis

Fransen M, Agaliotis M, Nairn L, Votrubec M, Bridgett L, Woodward M. Retrospective and prospective reporting of knee pain and disability among people with symptomatic knee osteoarthritis. Osteoarthr Cartil. 2010; 18(2): S146-7.