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Whole blood lead levels are associated with radiographic and symptomatic knee osteoarthritis: a cross-sectional analysis in the Johnston County Osteoarthritis Project

Amanda E Nelson*, Xiaoyan A Shi, Todd A Schwartz, Jiu-Chiuan Chen, Jordan B Renner, Kathleen L Caldwell, Charles G Helmick and Joanne M Jordan

Arthritis Research & Therapy 2011, 13:R37  doi:10.1186/ar3270