Liesnyi V, Filonenko V, Liesna A. Peculiarities of diagnostics of atypical course of perforated duodenal ulcer (clinical case). Med. perspekt. [Internet]. 2022Jun.28 [cited 2024Dec.19];27(2):184-8. Available from: https://journals.uran.ua/index.php/2307-0404/article/view/260411