FENTANYL VS MORPHINE AS ADJUVANT TO SPINAL ANESTHESIA FOR CAESAREAN SECTION: AN OBSERVATIONAL STUDY. EuroMediterranean Biomedical Journal, [S. l.], v. 18, p. 79–83, 2025. DOI: 10.3269/ebmj.2023.39. Disponível em: https://www.embj.org/home/article/view/39. Acesso em: 21 oct. 2025.