1A. Martini, MD, Professor, IRCCS Istituto Giannina Gaslini, Direzione Scientifica; A. Ravelli, MD, Professor, IRCCS Istituto Giannina Gaslini, Clinica Pediatrica e Reumatologia and Università degli Studi di Genova; T. Avcin, MD, PhD, University Children's Hospital, University Medical Center Ljubljana, Department of Allergology, Rheumatology and Clinical Immunology; M.W. Beresford, MBChB, PhD, Department of Paediatric Rheumatology, Alder Hey Children's NHS Foundation Trust, and Institute of Translational Medicine, University of Liverpool; R. Burgos-Vargas, MD, Hospital General de Mexico, Departamento de Reumatología; R. Cuttica, MD, Hospital Pedro de Elizalde, Rheumatology Section; N.T. Ilowite, MD, Children's Hospital at Montefiore, Albert Einstein College of Medicine, Pediatrics; R. Khubchandani, MD, Jaslok Hospital and Research Centre, Department of Paediatrics; R.M. Laxer, MD, The Hospital for Sick Children, Division of Rheumatology, Department of Paediatrics, University of Toronto; D.J. Lovell, MD, MPH, Cincinnati Children's Hospital Medical Center, Division of Rheumatology; R.E. Petty, MD, PhD, British Columbia Children's Hospital, Department of Pediatrics, University of British Columbia; C.A. Wallace, MD, Seattle Children's Hospital; N.M. Wulffraat, MD, PhD, Wilhelmina Children's Hospital, Department of Pediatric Immunology and Rheumatology; A. Pistorio, MD, PhD, IRCCS Istituto Giannina Gaslini, Servizio di Epidemiologia e Biostatistica; N. Ruperto, MD, MPH, IRCCS Istituto Giannina Gaslini, Clinica Pediatrica e Reumatologia, PRINTO. [email protected]. 2From Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Giannina Gaslini, Direzione Scientifica; IRCCS Istituto Giannina Gaslini, Clinica Pediatrica e Reumatologia, Pediatric Rheumatology International Trials Organization (PRINTO), and Università degli Studi di Genova; IRCCS Istituto Giannina Gaslini, Servizio di Epidemiologia e Biostatistica, Genoa, Italy; University Children's Hospital, University Medical Center Ljubljana, Department of Allergology, Rheumatology and Clinical Immunology, Ljubljana, Slovenia; Department of Paediatric Rheumatology, Alder Hey Children's National Health Service (NHS) Foundation Trust; Institute of Translational Medicine, University of Liverpool, Liverpool, UK; Hospital General de Mexico, Departamento de Reumatología, Mexico City, Mexico; Hospital Pedro de Elizalde, Rheumatology Section, Buenos Aires, Argentina; Children's Hospital at Montefiore, Albert Einstein College of Medicine, Pediatrics, New Hyde Park, New York; Cincinnati Children's Hospital Medical Center, Division of Rheumatology, Cincinnati, Ohio; Seattle Children's Hospital, Seattle, Washington, USA; Jaslok Hospital and Research Centre, Department of Paediatrics, Mumbai, India; The Hospital for Sick Children, Division of Rheumatology, Department of Paediatrics, University of Toronto, Toronto, Ontario; British Columbia Children's Hospital, Department of Pediatrics, University of British Columbia, Vancouver, British Columbia, Canada; Wilhelmina Children's Hospital, Department of Pediatric Immunology and Rheumatology, Utrecht, the Netherlands. [email protected]. 3A. Martini, MD, Professor, IRCCS Istituto Giannina Gaslini, Direzione Scientifica; A. Ravelli, MD, Professor, IRCCS Istituto Giannina Gaslini, Clinica Pediatrica e Reumatologia and Università degli Studi di Genova; T. Avcin, MD, PhD, University Children's Hospital, University Medical Center Ljubljana, Department of Allergology, Rheumatology and Clinical Immunology; M.W. Beresford, MBChB, PhD, Department of Paediatric Rheumatology, Alder Hey Children's NHS Foundation Trust, and Institute of Translational Medicine, University of Liverpool; R. Burgos-Vargas, MD, Hospital General de Mexico, Departamento de Reumatología; R. Cuttica, MD, Hospital Pedro de Elizalde, Rheumatology Section; N.T. Ilowite, MD, Children's Hospital at Montefiore, Albert Einstein College of Medicine, Pediatrics; R. Khubchandani, MD, Jaslok Hospital and Research Centre, Department of Paediatrics; R.M. Laxer, MD, The Hospital for Sick Children, Division of Rheumatology, Department of Paediatrics, University of Toronto; D.J. Lovell, MD, MPH, Cincinnati Children's Hospital Medical Center, Division of Rheumatology; R.E. Petty, MD, PhD, British Columbia Children's Hospital, Department of Pediatrics, University of British Columbia; C.A. Wallace, MD, Seattle Children's Hospital; N.M. Wulffraat, MD, PhD, Wilhelmina Children's Hospital, Department of Pediatric Immunology and Rheumatology; A. Pistorio, MD, PhD, IRCCS Istituto Giannina Gaslini, Servizio di Epidemiologia e Biostatistica; N. Ruperto, MD, MPH, IRCCS Istituto Giannina Gaslini, Clinica Pediatrica e Reumatologia, PRINTO.
4From Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Giannina Gaslini, Direzione Scientifica; IRCCS Istituto Giannina Gaslini, Clinica Pediatrica e Reumatologia, Pediatric Rheumatology International Trials Organization (PRINTO), and Università degli Studi di Genova; IRCCS Istituto Giannina Gaslini, Servizio di Epidemiologia e Biostatistica, Genoa, Italy; University Children's Hospital, University Medical Center Ljubljana, Department of Allergology, Rheumatology and Clinical Immunology, Ljubljana, Slovenia; Department of Paediatric Rheumatology, Alder Hey Children's National Health Service (NHS) Foundation Trust; Institute of Translational Medicine, University of Liverpool, Liverpool, UK; Hospital General de Mexico, Departamento de Reumatología, Mexico City, Mexico; Hospital Pedro de Elizalde, Rheumatology Section, Buenos Aires, Argentina; Children's Hospital at Montefiore, Albert Einstein College of Medicine, Pediatrics, New Hyde Park, New York; Cincinnati Children's Hospital Medical Center, Division of Rheumatology, Cincinnati, Ohio; Seattle Children's Hospital, Seattle, Washington, USA; Jaslok Hospital and Research Centre, Department of Paediatrics, Mumbai, India; The Hospital for Sick Children, Division of Rheumatology, Department of Paediatrics, University of Toronto, Toronto, Ontario; British Columbia Children's Hospital, Department of Pediatrics, University of British Columbia, Vancouver, British Columbia, Canada; Wilhelmina Children's Hospital, Department of Pediatric Immunology and Rheumatology, Utrecht, the Netherlands.