[1] Kings Coll Hosp NHS Trust, Dept Rheumatol, London, England
[2] Kings Coll London, Dept Acad Rheumatol, London, England
[3] Natl Congenital Anomaly & Rare Dis Registrat Serv, Natl Dis Registrat Serv, NHS Digital, London, England
[4] Univ Nottingham, Sch Med, Dept Lifespan & Populat Hlth, Nottingham, England
[5] Nottingham Univ Hosp NHS Trust, Dept Rheumatol, Nottingham, England
[6] Natl Canc Registrat & Anal Serv, Natl Dis Registrat Serv, NHS Digital, London, England