1. GSK Vaccines, Wavre, Belgium
2. Department of Tropical Pediatrics, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
3. Travel Medicine Center, Division of Infectious Diseases and Travel Medicine, Mount Auburn Hospital, Cambridge, MA, USA
4. Harvard Medical School, Boston, MA, USA
5. GSK Vaccines, Singapore, Singapore
6. Pallas Health Research and Consultancy, Rotterdam, The Netherlands