[1] Univ Manchester, Ctr Genet & Genom Versus Arthrit, Manchester, Lancs, England
[2] Imam Abdulrahman bin Faisal Univ, Publ Hlth, Dammam, Saudi Arabia
[3] Univ Manchester, Ctr Epidemiol Versus Arthrit, Manchester, Lancs, England
[4] Manchester Acad Hlth Sci Ctr, NIHR Manchester Biomed Res Ctr, Manchester, Lancs, England