1 Title: Discrete Choice Experiment on a Magnetic Resonance Imaging Scoring System for Temporomandibular Joints in Juvenile Idiopathic Arthritis Running Head: Discrete Choice Experiment on JAMRIS-TMJ Authors: Mirkamal Tolend, BSc, The Hospital for Sick Children and University of Toronto, Toronto, ON, Canada Thitiporn Junhasavasdikul, MD, Ramathibodi Hospital, Bangkok, Thailand Randy Q. Cron, MD, PhD, Children’s of Alabama, Birmingham, AL, United States Emilio J. Inarejos Clemente, MD, Hospital Sant Joan de Deu, Barcelona, Spain Thekla von Kalle, MD, Olgahospital Klinikum Stuttgart, Stuttgart, Germany Christian J. Kellenberger, MD, University Children’s Hospital Zürich, Zürich, Switzerland Bernd Koos, DMD, University Hospital Tübingen, Tübingen, Germany. Elka Miller, MD, CHEO, University of Ottawa, ON, Canada Marion A. van Rossum, MD, PhD, Emma Children’s Hospital, Academic Medical Centre, and Amsterdam Rheumatology and Immunology Center, Reade, Amsterdam, The Netherlands Rotraud K. Saurenmann, MD, University Children’s Hospital Zürich, Zürich, Switzerland Lynn Spiegel, MD, The Hospital for Sick Children, Toronto, ON, Canada. Jennifer Stimec, MD, The Hospital for Sick Children, Toronto, ON, Canada. Marinka Twilt, MD, MScE, PhD, Alberta Children’s Hospital, and University of Calgary, Calgary, Alberta, Canada Nikolay Tzaribachev, MD, PhD, Pediatric Rheumatology Research Institute, Bad Bramstedt, Germany Shelly Abramowicz, DMD, MPH, Emory University School of Medicine, and Children's Healthcare of Atlanta, Atlanta, GA, United States Simone Appenzeller, MD, PhD, University of Campinas, Campinas, Brazil Linda Z. Arvidsson, DDS, PhD, University of Oslo, Oslo, Norway Saurabh Guleria, MD, MD, Austin Radiological Association, Austin, TX, United States Jacob L. Jaremko, MD, PhD, University of Alberta, Edmonton, AB, Canada