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Limited educational attainment and radiographic and symptomatic knee osteoarthritis: a cross-sectional analysis using data from the Johnston County (North Carolina) Osteoarthritis Project

Leigh F Callahan*, Jack Shreffler, Bernadette C Siaton, Charles G Helmick, Britta Schoster, Todd A Schwartz, Jiu-Chiuan Chen, Jordan B Renner and Joanne M Jordan

Arthritis Research & Therapy 2010, 12:R46 doi:10.1186/ar2956

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