1. SBHI NR City Clinical Hospital No.39, Nizhny Novgorod,
2. FBHI Privolzhsky District Medical Center, Nizhny Novgorod,
3. SBHI NR City Clinical Hospital No. 39, Nizhny Novgorod
4. Medical Center «Tonus», Nizhny Novgorod
5. Medical Center “Tomograd”, Nizhny Novgorod
6. FSBEI HE Privolzhsky Research Medical University, Nizhny Novgorod