Kazan medical journalKazan medical journal0368-48142587-9359Eco-Vector8631210.17816/kazmj86312MiscellaneousPerroral endoscopy. Archiv of otoIaryngol. 1928TeamEditorialinfo@eco-vector.com150319332932612610311202103112021Copyright © 2021, Eco-Vector2021<p>Valuable help, according to Louis H. Clerf M. D., an internist can receive from a bronchoscopist in the diagnosis and treatment of a number of lung diseases: neoplasms, lues, ulcerative lesions of the bronchi, etc.</p>Kazan Medical archiveКазанский медицинский архив