A Prospective, Randomized Clinical Trial to Evaluate Analgesic Efficacy of Bilateral Pterygopalatine Fossa Injection in Patients Undergoing Maxillofacial Cancer Surgeries Under Gen... by Ekramy M Abdelghafar, Dina Nabil Abbas, Ahmed Othman, Sherif Bahaa Elddin Zayed, Ashraf Hamed Shawki

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