1. Department of Microbiology and Immunology; Drexel University College of Medicine; Philadelphia PA USA
2. Graduate School of Biomedical Sciences and Professional Studies; Microbiology and Immunology Graduate Program; Drexel University College of Medicine; Philadelphia PA USA
3. Central European Institute of Technology; Masaryk University; Brno Czech Republic
4. Baruch S. Blumberg Institute; Doylestown PA USA