DR. PRAVEEN AGRAWAL. CLINICAL STUDY OF PERFORATED PEPTIC ULCER DISEASE. International Journal of Medical Science And Diagnosis Research, [S. l.], v. 3, n. 3, 2019. Disponível em: https://ijmsdr.com/index.php/ijmsdr/article/view/314. Acesso em: 14 may. 2026.