1. Serum Institute of India Pvt Ltd, Pune, India.
2. Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, Tennessee.
3. Department of Microbiology, Immunology, and Biochemistry, The University of Tennessee Health Science Center, Memphis, Tennessee.
4. Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado.
5. Department of Epidemiology, Colorado School of Public Health, Section of Infectious Diseases, Children's Hospital Colorado, Aurora, Colorado.
6. Department of Molecular Virology and Microbiology, Baylor College of Medicine, Houston, Texas.