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Associations of educational attainment, occupation and community poverty with knee osteoarthritis in the Johnston County (North Carolina) osteoarthritis project

Leigh F Callahan*, Rebecca J Cleveland, Jack Shreffler, Todd A Schwartz, Britta Schoster, Randy Randolph, Jordan B Renner and Joanne M Jordan

Arthritis Research & Therapy 2011, 13:R169  doi:10.1186/ar3492

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