1. Institute for Health Metrics and Evaluation, University of Washington, Seattle, WA, USA
2. Department of Anesthesiology and Pain Medicine, University of Washington and Seattle Children’s Hospital, Seattle, WA, USA
3. Division of Population and Patient Health, King’s College London, Dental Institute at Guy’s, King’s College, and St. Thomas’ Hospitals, London, UK
4. Institute of Dentistry, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK