1. GSK, 1300 Wavre, Belgium
2. RTI Health Solutions, 69009 Lyon, France
3. Royal College of General Practitioners, London NW1 2FB, UK
4. British Global & Travel Health Association, London BA1 2SA, UK
5. RTI Health Solutions, Research Triangle Park, Durham, NC 27709, USA
6. WHO Collaborating Centre for Travellers’ Health, Epidemiology, Biostatistics and Prevention Institute, University of Zurich, CH-8001 Zurich, Switzerland
7. Department of Epidemiology, Human Genetics and Environmental Sciences, School of Public Health, University of Texas, Houston, TX 77030, USA