EB Nordal, NT Songstad, B Straume, L Berntson and M Rygg
from 15th Paediatric Rheumatology European Society (PreS) CongressLondon, UK. 14–17 September 2008
Pediatric Rheumatology 2008, 6(Suppl 1):P4doi:10.1186/1546-0096-6-S1-P4