1. A. R. Babaeva and O. N. Rodionova, Vestn. Vol. Gos. Med. Univ., No. 2, 3 – 12 (2006).
2. E. P. Kakorin and V. I. Starodubov, Total Disease Rate of the Russian Aged Population in 2017 [in Russian], Part IV, Department of Monitoring, Analysis, and Strategic Development of Healthcare, Central Scientific Research Institute of Healthcare Organization and Information, Ministry of Health of Russia, Moscow (2018), p. 109.
3. T. I. Khristoforova, R. P. Skvortsova, V. A. Karyagina, et al., Vopr. Sovrem. Pediatr., 5(1), 620 – 621 (2006).
4. O. V. Evdokimova, Ya. V. Peshkova, V. O. Reshetova, et al., Estestv. Tekh. Nauki, No. 1(57), 142 – 144 (2012).
5. D. M. Carthy, Best Pract. Res., Clin. Gastroenterol., 15(5), 755 – 773 (2001).