[1] New Cross Hosp, Dept Paediat, Wolverhampton WV16 5EQ, W Midlands, England
[2] Alder Hey Childrens NHS Fdn Trust, Dept Paediat Rheumatol, Liverpool, Merseyside, England
[3] Freeman Rd Hosp, Dept Paediat Rheumatol, Newcastle Upon Tyne NE7 7DN, Tyne & Wear, England
[4] Queens Med Ctr, Dept Paediat Rheumatol, Nottingham NG7 2UH, England