1. Palchun VT. Chronic tonsillitis. Otorhinolaryngology: national guidelines. M.: GEOTAR-Media; 2008:682-691. (In Russ.)
2. Voznesensky LN, Palchun VT. Diseases of the ear, throat and nose. M.: Medicine; 1981. (In Russ.)
3. Preobrazhensky BS. Chronic tonsillitis and its relationship with other diseases. M.: Gosudarstvennoe izdatel’stvo meditsinskoj literatury; 1954. (In Russ.)
4. Preobrazhensky BS, Temkin YaS. Diseases of the ear, nose and throat. M.: Medgiz; 1960. (In Russ.)
5. Kryukov AI, Aksenova AV, Zakharova AF, Chumakov PL, Zhuk LG. Peculiarities of epidemiology of chronic tonsillitis under current conditions of providing specialized aid to the patients presenting with ENT diseases. Vestnik otorinolaringologii. 2013;78(3):4-7. (In Russ.)