KAMPHUIS S.

In the first version of the paper, two of the three subheadings in Table 2 were spelt incorrectly. Takayasu Arthritis has vbeen changed to Takayasu arteritis. This error only appeared in two subheadings. The stated recommendations and main article text have not been affected or changed. The Publisher and authors apologise for this error.

Background: The availability of methotrexate and the introduction of multiple biological agents have revolutionized the treatment of juvenile idiopathic arthritis (JIA). Several international and national drug registries have been implemented to accurately monitor the long-term safety/efficacy of these agents. This report aims to present the...

Background: To our knowledge, the characteristics and burden of childhood arthritis have never been studied on a worldwide basis. We aimed to investigate, with a cross-sectional study, the prevalence of disease categories, treatment methods, and disease status in patients from across different geographical areas and from countries with diverse...

Objective: To develop a Childhood Lupus Improvement Index (CHILI) as a tool to measure response to therapy in childhood-onset systemic lupus erythematosus (cSLE), with a focus on clinically relevant improvement (CRI cSLE ). Methods: Pediatric nephrology and rheumatology subspecialists (n = 213) experienced in cSLE management were invited to...