1. Military Medical Academy, University of Defence, Belgrade, Serbia
2. Academy of National Security, Belgrade, Serbia
3. Integrated Research Facility at Fort Detrick, Clinical Monitoring Research Program Directorate, Frederick National Laboratory for Cancer Research supported by the National Cancer Institute, Frederick, Maryland, USA
4. Integrated Research Facility at Fort Detrick, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Frederick, Maryland, USA
5. Institute of Virology, Vaccines and Sera “Torlak,” Belgrade, Serbia