1. National Center for Immunization and Respiratory Diseases, Division of Viral Diseases, Respiratory Viruses Laboratory Branch, Centers for Disease Control and Prevention (CDC), Atlanta, Georgia, USA
2. Synergy America, Inc., Duluth, GA, USA
3. The University of Tennessee Health Science Center, Microbiology, Immunology, and Biochemistry, Memphis, TN, USA
4. Ministry of Health, Riyadh, Saudi Arabia