DR. MANOJ KANTILAL PARIKH. A PROSPECTIVE STUDY TO ASSESS THE EFFECTIVENESS OF PRE-EMPTIVE ANALGESIA USING TRAMADOL VERSUS FENTANYL ON POST-OPERATIVE PAIN MANAGEMENT IN ORTHOPEDIC SURGERY PATIENTS. Journal of Population Therapeutics and Clinical Pharmacology, [S. l.], v. 22, n. 3, p. 330–343, 2015. DOI: 10.53555/78rxx503. Disponível em: https://jptcp.com/index.php/jptcp/article/view/11322. Acesso em: 11 sep. 2025.