Whole-body MRI for juvenile idiopathic arthritis.

Competing Interests: CC reports grant funding from Action Medical Research. TB is funded by a National Institute for Health and Care Research (NIHR) Clinical Lectureship and reports grant funding from NIHR Biomedical Research Centre, and honorarium for manuscript writing from the National Ankylosing Spondylitis Society. VC reports grant funding from the British Society of Rheumatology. MAH-C declares no competing interests.