1. Willeke A. C. Duffhues, MD, was a Medical Student, at VieCuri Medical Center, Venlo, the Netherlands.
2. Dennis G. Barten, MD, is an Emergency Physician and Residency Director, Department of Emergency Medicine, at VieCuri Medical Center, Venlo, the Netherlands.
3. Harald De Cauwer, MD, is a Neurologist, Department of Neurology, Dimpna Regional Hospital, Geel, Belgium; and PhD Candidate, Faculty of Medicine and Health Sciences, University of Antwerp, Wilrijk, Belgium.
4. Luc Mortelmans, MD, is an Emergency Physician, Center for Research and Education in Emergency Care, University of Leuven, Leuven, Belgium; REGEDIM, Free University Brussels, Brussels, Belgium; and Department of Emergency Medicine, ZNA Camp Stuivenberg, Antwerp, Belgium.in the Department of Emergency Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA.
5. Frits van Osch, PhD, is a Clinical Epidemiologist, Department of Clinical Epidemiology, at VieCuri Medical Center, Venlo, the Netherlands.
6. Derrick Tin, MD, PhD, is an Emergency Physician and Core Faculty, in the Department of Emergency Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA.
7. Marion P. G. Koopmans, PhD, is a Professor of Virology and Head, Department of Viroscience, Erasmus Medical Centre and the Pandemic and Disaster Preparedness Center, Rotterdam/Delft, the Netherlands.