Investigating The Effect Of Sublingual Melatonin On The Rate Of Using Opioids In Laparotomy Patients Admitted To ICU. Journal of Pharmaceutical Negative Results, [S. l.], v. 13, n. 4, p. 2096–2103, 2022. DOI: 10.47750/pnr.2022.13.04.284. Disponível em: https://pnrjournal.com/index.php/home/article/view/9546.. Acesso em: 5 jun. 2026.