1. Pirogov Russian National Research Medical University
2. Veltischev Research and Clinical Institute for Pediatrics of the Pirogov Russian National Research Medical University
3. Central Scientific Research Institute of Epidemiology
4. Saint Petersburg State Pediatric Medical University; Belgorod State National Research University
5. Burdenko Voronezh State Medical University
6. Saint Petersburg State Pediatric Medical University
7. Samara State Medical University
8. Kazan State Medical University
9. Sechenov First Moscow State Medical University (Sechenov University)