1. Genetech Research Institute, Colombo, Sri Lanka
2. Department of Microbiology, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka
3. Molecular and Translational Sciences, United States Army Medical Research Institute of Infectious Diseases, Frederick, Maryland, USA
4. Division of Vaccine Discovery, La Jolla Institute of Allergy and Immunology, La Jolla, California, USA