The George Institute for Global Health, Faculty of Medicine, University of New South Wales, Sydney, New South Wales, Australia. Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, UK. Department of Neurology, Oslo University Hospital, Oslo, Norway. Research and Development Department, The Norwegian Air Ambulance Foundation, Oslo, Norway. Stroke Trials Unit, University of Nottingham, Queen's Medical Centre, Nottingham, UK. Stroke, Nottingham University Hospitals NHS Trust, Nottingham, UK. National University of Malaysia, Kuala Lumpur, Malaysia. Department of Preventive Medicine and Public Health, Fukuoka University, Fukuoka, Japan. Prince of Wales Clinical School, University of New South Wales, Randwick, New South Wales, Australia. Neurology Department, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia. Central Clinical School, the University of Sydney, Sydney, New South Wales, Australia. Department of Neurology, Army Hospital Research and Referral, New Delhi, India. Department of Neurology, Xijing Hospital, Fourth Military Medical University, Xi'an, China. The Shaanxi Cerebrovascular Disease Clinical Research Center, Xi'an, China. Department of Neurology, University of Miami Miller School of Medicine, Miami, Florida, USA. Stroke Research Group, Norfolk and Norwich University Hospital, UK. Norwich Medical School, University of East Anglia, UK. Zeenat Qureshi Stroke Institute and Department of Neurology, University of Missouri, Columbia, MO. University of Leicester, Department of Cardiovascular Sciences and NIHR Leicester Biomedical Research Centre, Leicester, UK. Department of Neurology and Comprehensive Stroke Center, UCLA, Los Angeles, California, USA. The George Institute for Global Health, Faculty of Medicine, University of New South Wales, Sydney, New South Wales, Australia canderson@georgeinstitute.org.au. The George Institute China at Peking University Health Science Center, Beijing, PR China.