1. Center of Tropical Medicine and Travel Medicine, Department of Infectious Diseases, Division of Internal Medicine, Amsterdam University Medical Centers, University of Amsterdam, The Netherlands
2. Public Health and Infection Research Group, Faculty of Health Sciences, Universidad Tecnológica de Pereira, Risaralda, Colombia
3. University of Zürich, World Health Organization Collaborating Centre for Travel Medicine, Travel Clinic and Department of Public Health, Epidemiology, Biostatistics and Prevention Institute, Switzerland