For citations:
Shelygin Yu.A., Vasiliev S.V., Veselov A.V., Groshilin V.S., Kashnikov V.N., Korolik V.Yu., Kostarev I.V., Kuzminov A.M., Moskalev A.I., Mudrov A.A., Frolov S.A., Titov A.Yu. ANAL FISTULA. Koloproktologia. 2020;19(3):10-25. (In Russ.) https://doi.org/10.33878/2073-7556-2020-19-3-10-25