1. Collaborative Research Center of Okayama University for Infectious Diseases in India, Okayama University Kolkata India
2. Department of Bacteriology INational Institute of Infectious Diseases Tokyo Japan
3. Graduate School of Medicine, Dentistry and Pharmaceutical SciencesOkayama University Okayama Japan
4. Division of BacteriologyNational Institute of Cholera and Enteric Diseases Kolkata India
5. Center for Human Microbial EcologyTranslational Health Science and Technology Institute Faridabad India