1 Centre for Inflammation and Tissue Repair, University College London (UCL) Respiratory, Division of Medicine, UCL, London, UK; Department of Rheumatology, UCL Hospital, London, UK.
2 Department of Dermatology, UCL Hospital, London, UK.
3 UCL Centre for Adolescent Rheumatology, London, UK.
4 Centre for Inflammation and Tissue Repair, University College London (UCL) Respiratory, Division of Medicine, UCL, London, UK; Department of Respiratory Medicine, UCL Hospital, London, UK.
5 Centre for Inflammation and Tissue Repair, University College London (UCL) Respiratory, Division of Medicine, UCL, London, UK.
6 Infection, Inflammation and Rheumatology Section, UCL Great Ormond Street Institute of Child Health, and Great Ormond Street Hospital NHS Foundation Trust, London, UK.
7 Department of Respiratory Medicine, UCL Hospital, London, UK.
8 Microvascular Diagnostics, Royal Free Hospital, London NW3 2QG, UK; Department of Rheumatology, Royal Free Hospital, London NW3 2QG, UK.
9 Department of Rheumatology, Royal Free Hospital, London NW3 2QG, UK. Electronic address: c.denton@ucl.ac.uk.