1National Institute for Health Research Manchester
Biomedical Research Centre, Manchester University NHS Foundation
Trust
2Centre for Musculoskeletal Research, University of
Manchester, Manchester Academic Health Science Centre
3Centre for Epidemiology Versus Arthritis, University
of Manchester, Manchester
4Department of Rheumatology, Salford Royal NHS
Foundation Trust, Salford
5Royal National Hospital for Rheumatic Diseases,
Royal United Hospitals Bath NHS Foundation Trust, Bath, UK
6Division of Medicine, Department of Medicine,
University of Louisville, Louisville, KY
7Division of Immunology and Rheumatology, Department
of Medicine and Dermatology, Stanford University, Stanford
8Palo Alto Health Care System, Palo
Alto
9Department of Dermatology, School of Medicine,
Stanford University, Stanford, CA
10Division of Rheumatology
11Division of Epidemiology, University of
Pennsylvania, Philadelphia, PA, USA
12Department of Rheumatology, King’s College
Hospital NHS Foundation Trust, London, UK
13Department of Dermatology, Wright State
University, Dayton, OH, USA
14Centre for Rheumatology and Department of
Neuromuscular Diseases, University College London
15National Institute for Health Research University
College London Hospitals Biomedical Research Centre, University College London
Hospitals NHS Trust
16Department of Rheumatology, Northwick Park
Hospital, London North West University Healthcare NHS Trust,
London
17Department of Pharmacy and Pharmacology, University
of Bath, Bath, UK
18Department of Immunology and Rheumatology, Stanford
Health Care, Stanford, CA, USA
19Systemic Autoimmune Unity, Vall D’Hebron
General Hospital, Universitat Autonoma de Barcelona, Barcelona,
Spain
20Department of Neurology, Neuromuscular
Centre, Göttingen, Germany
21Harvard Medical School
22Department of Dermatology, Brigham and
Women’s Hospital, Boston, MA
23Department of Dermatology, University of
Pennsylvania
24Division of Dermatology, Corporal Michael J.
Crescenz VA Medical Center, Philadelphia
25Division of Rheumatology and Clinical Immunology,
Department of Medicine, University of Pittsburgh, Pittsburgh, PA,
USA
✉Correspondence to: Rohit Aggarwal, Division of
Rheumatology and Clinical Immunology, Arthritis and Autoimmunity Center (Falk),
UPMC Myositis Center, University of Pittsburgh, 3500 Terrace Street, BST S 700,
Pittsburgh, PA, USA. E-mail: aggarwalr@upmc.edu