The results of perforated peptic ulcer surgery; A single center experience of 86 patients . Annals of Medical Research, [S. l.], v. 25, n. 2, p. 0189–0192, 2021. Disponível em: http://annalsmedres.org/index.php/aomr/article/view/1514. Acesso em: 19 apr. 2025.