1. Direct and indirect costs attributable to osteoarthritis in active subjects;Rabenda;J Rheumatol,2006
2. Health-related quality of life in older adults with symptomatic hip and knee osteoarthritis: A comparison with matched healthy controls;Salaffi;Aging Clin Exp Res,2005
3. Direct and indirect costs of osteoarthritis of the knee;Leardini;Clin Exp Rheumatol,2004
4. Prevalence, risk factors, and impact of knee pain suggesting osteoarthritis in Spain;Fernández-López;Clin Exp Rheumatol,2008
5. An international comparison of the estimated effect of the aging of the population on the major cause of disablement, musculoskeletal disorders;Badley;J Rheumatol,1995