Effect of Characteristic Inflammatory and Structural Pelvic Magnetic Resonance Imaging Lesions on Expert Assessment of Axial Juvenile Spondyloarthritis

A. Mayer, MD, Department of Pediatrics, Division of Rheumatology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.

T.G. Brandon, MPH, Department of Pediatrics, Division of Rheumatology and Clinical Futures, Children's Hospital of Philadelphia, Philadelphia, Department of Radiology, Whiddon College of Medicine, University of South Alabama, Mobile, Alabama, USA.

A. Aggarwal, MD, DM, Department of Clinical Immunology and Rheumatology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India.

R. Burgos-Vargas, MD, Department of Rheumatology, Hospital General de Mexico Dr Eduardo Ligeaga, Mexico City, Mexico.

R.A. Colbert, MD, PhD, National Institute of Arthritis, Musculoskeletal, and Skin Diseases, National Institutes of Health, Bethesda, Maryland, USA.

G. Horneff, MD, Department of General Paediatrics, Asklepios Klinik Sankt Augustin, Sankt Augustin, and Department of Pediatric and Adolescent Medicine, University Hospital Cologne, Cologne, Germany.

R. Joos, MD, University Hospital Gent, Ghent, and Department of Rheumatology, ZNA, Antwerp, Belgium.

R.M. Laxer, MDCM, University of Toronto, The Hospital for Sick Children, and St. Michael's Hospital, Toronto, Ontario, Canada.

K. Minden, MD, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Pediatric Respiratory Medicine, Immunology and Critical Care Medicine, and Deutsches Rheuma-Forschungszentrum Berlin, Berlin, Germany.

A. Ravelli, MD, Direzione Scientifica, IRCCS Istituto Giannina Gaslini, and Dipartimento di Neuroscienze, Riabilitazione, Oftalmologia, Genetica e Scienze Materno-Infantili (DINOGMI), Università degli Studi di Genova, Genoa, Italy.

N. Ruperto, MD, MPH, Università Milano Bicocca, Fondazione IRCCS San Gerardo dei Tintori, PRINTO, Monza, Italy.

J.A. Smith, MD, PhD, Department of Pediatrics, University of Wisconsin-Madison School of Medicine and Public Health, Madison, Wisconsin, USA.

M.L. Stoll, MD, PhD, MSCS, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama, USA.

S.M. Tse, MD, Department of Paediatrics, Division of Rheumatology, The Hospital for Sick Children (SickKids), University of Toronto, Toronto, Ontario, Canada.

F. Van den Bosch, MD, PhD, VIB-UGent Center for Inflammation Research, Department of Internal Medicine and Pediatrics, Ghent University Hospital, Ghent, Belgium.

W.P. Maksymowych, MD, Department of Medicine, University of Alberta, and CARE Arthritis, Edmonton, Alberta, Canada.

R.G. Lambert, MB BCh, Department of Radiology and Diagnostic Imaging, University of Alberta, Edmonton, Alberta, Canada.

D.M. Biko, MD, Department of Radiology, Children's Hospital of Philadelphia and Department of Radiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.

N.A. Chauvin, MD, Department of Radiology, Penn State Health Milton S. Hershey Children's Hospital, Hershey, Pennsylvania, USA.

M.L. Francavilla, MD, Department of Radiology, Whiddon College of Medicine, University of South Alabama, Mobile, Alabama, USA.

J.L. Jaremko, MD, PhD, Department of Radiology and Diagnostic Imaging, University of Alberta, Edmonton, Alberta, Canada.

N. Herregods, MD, PhD, Department of Radiology and Nuclear Medicine, Ghent University Hospital, Ghent, Belgium.

O. Kasapcopur, MD, Department of Pediatric Rheumatology, Istanbul University-Cerrahpasa, Cerrahpasa Medical School, Istanbul, Turkey.

M. Yildiz, MD, Department of Pediatric Rheumatology, Istanbul University- Cerrahpasa, Cerrahpasa Medical School, Istanbul, Turkey.

H. Srinivasalu, MD, Division of Rheumatology, Children's National Hospital, George Washington University School of Medicine, Washington, DC, and Pediatric Translational Research Branch, National Institute of Arthritis, Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, Maryland, USA.

J.A. Faerber, PhD, Data Science and Biostatistics Unit, Department of Biomedical and Health Informatics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.

R. Naden, MD, Departments of Medicine/Obstetric Medicine, Auckland City Hospital, Auckland, New Zealand, and McMaster University, Hamilton, Ontario, Canada.

A.M. Hendry, General Medicine and Rheumatology, Division of Medicine, Counties Manukau District Health Board, Auckland, New Zealand.

P.F. Weiss, MD, MSCE, Department of Pediatrics, Division of Rheumatology and Clinical Futures, Children's Hospital of Philadelphia and Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA. Pennsylvania, USA.