1. FSBEI of HE “The Chuvash State University n. a. I. N. Ulyanov”; BI of HE “The Surgut State University”; BU ChR “Republican Clinical Hospital” of the Ministry of Health of the Chuvash Republic
2. FSBEI of HE “The Chuvash State University n. a. I. N. Ulyanov”; BU ChR “City Clinical Hospital No. 1” of the Ministry of Health of the Chuvash Republic
3. FSBEI of HE “The Chuvash State University n. a. I. N. Ulyanov”
4. FSBEI of HE “The Chuvash State University n. a. I. N. Ulyanov”; BU ChR “Republican Clinical Hospital” of the Ministry of Health of the Chuvash Republic