Management Of Perforated Peptic Ulcers. Journal of Pharmaceutical Negative Results, [S. l.], p. 4334–4341, 2022. DOI: 10.47750/pnr.2022.13.S07.542. Disponível em: https://www.pnrjournal.com/index.php/home/article/view/5319.. Acesso em: 8 jun. 2026.