[1] Univ Sydney, Sydney Sch Publ Hlth, Sydney, NSW 2006, Australia
[2] Childrens Hosp Westmead, Ctr Kidney Res, Westmead, NSW, Australia
[3] Sydney Childrens Hosp Network, Dept Rheumatol, Westmead, NSW, Australia
[4] Univ Ottawa, Ctr Global Hlth, Ottawa, ON K1N 6N5, Canada
[5] Univ New S Wales, Sch Womens & Childrens Hlth, Sydney, NSW, Australia
[6] Sydney Childrens Hosp Randwick, Dept Nephrol, Sydney, NSW, Australia
[7] Westmead Hosp, Dept Immunol, Sydney, NSW, Australia
[8] Univ New S Wales, Fac Med, Sydney, NSW, Australia
[9] Liverpool Hosp, Dept Rheumatol, Sydney, NSW, Australia