1. Epidemiology, Biostatistics and Prevention Institute, Division of Communicable Diseases, WHO Collaborating Centre for Travellers’ Health, University of Zurich, Zurich, Switzerland2Division of Epidemiology, Human Genetics, and Environmental Sciences, Unive
2. Global Public Health Program, Frank H. Netter MD School of Medicine, Quinnipiac University, Hamden, Connecticut
3. Division of Epidemiology, Human Genetics, and Environmental Sciences, University of Texas School of Public Health and School of Medicine, Houston4Baylor St Luke’s Medical Center, Houston, Texas5Baylor College of Medicine, Houston, Texas