IMPACT OF FENTANYL ON HOSPITAL STAY IN PATIENTS UNDERGOING CARDIAC SURGERY AT REHMAN MEDICAL INSTITUE (RMI), PESHAWAR. Pakistan Journal of Medical & Cardiological Review, [S. l.], v. 5, n. 1, p. 5784–5801, 2026. DOI: 10.5281/zenodo.21964211. Disponível em: https://pakjmcr.com/index.php/1/article/view/1673. Acesso em: 2 sep. 2026.