1. Division of Epidemiology, Department of Public Health Sciences, University of California, Davis School of Medicine , Davis, California , USA
2. Department of Microbiology and Immunology, Faculty of Tropical Medicine , Mahidol University School of Medicine, Bangkok , Thailand
3. Sabin Vaccine Institute , Washington, District of Columbia , USA
4. Division of Infectious Diseases, Massachusetts General Hospital , Boston, Massachusetts , USA
5. Department of Medicine, Harvard Medical School , Boston, Massachusetts , USA
6. Department of Immunology and Infectious Diseases, Harvard T. H. Chan School of Public Health , Boston, Massachusetts , USA
7. Division of Infectious Diseases and Geographic Medicine, Stanford University School of Medicine , Stanford, California , USA