Teri A Reynolds1, Sara M Hollis2, Lee A Wallis3, Fiona Lecky4. 1. Department for the Management of Noncommunicable Diseases, Disability, Violence and Injury Prevention, World Health Organization, Geneva, Switzerland. Electronic address: reynoldst@who.int. 2. Department for the Management of Noncommunicable Diseases, Disability, Violence and Injury Prevention, World Health Organization, Geneva, Switzerland. Electronic address: emergencycare@who.int. 3. Division of Emergency Medicine, University of Cape Town, Cape Town, South Africa. Electronic address: lee.wallis@uct.ac.za. 4. Centre for Urgent and Emergency Care Research, School of Health and Related Research, University of Sheffield, Sheffield, UK. Electronic address: f.e.lecky@sheffield.ac.uk.