Brunner HI, Holland MJ, Beresford MW, Ardoin SP, Appenzeller S, Silva CA, Flores F, Goilav B, Avar Aydin PO, Wenderfer SE. American College of Rheumatology provisional criteria for clinically relevant improvement in children and adolescents with childhood‐onset systemic lupus erythematosus. Arthritis care & research 2019;71(5):579-590.