1. Volga District Medical Center, Federal Biomedical Agency of Russia, Nizhny Novgorod, City Clinical Hospital Thirty-Nine, Nizhny Novgorod, Central Primary Healthcare Unit Fifty, Federal Biomedical Agency of Russia, Sarov, National Research Lobachevsky State University of Nizhny Novgorod, Arzamas Central City Hospital
2. City Clinical Hospital Thirty-Nine, Nizhny Novgorod
3. Lyskovo Central District Hospital, Lyskovo, Nizhny Novgorod Region
4. Central Primary Healthcare Unit Fifty, Federal Biomedical Agency of Russia, Sarov
5. Semenov Central District Hospital, Semenov, Nizhny Novgorod Region
6. Federal State-Financed Institution Federal Siberian Research Clinical Centre, Federal Medical Biological Agency, Krasnoyarsk
7. Vyksa Central District Hospital, Vyksa Nizhny Novgorod Region