1. Smorodintsev Research Influenza Institute
2. Clinical Infectious Diseases Hospital named after S.P. Botkin
3. St. Petersburg State Pediatric Medical University
4. Children's City Hospital of St. Olga
5. Smorodintsev Research Influenza Institute; First St. Petersburg Pavlov State Medical University
6. St. Petersburg State Pediatric Medical University; Children's City Hospital of St. Olga