Catharina Eriksson, Heidi Kokkonen, Martin Johansson, Göran Hallmans, Göran Wadell and Solbritt Rantapää-Dahlqvist*
* Corresponding author: Solbritt Rantapää-Dahlqvist solbritt.rantapaa.dahlqvist@medicin.umu.se
Arthritis Research & Therapy 2011, 13:R30 doi:10.1186/ar3258
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