Abu-Elwafa, W. A. E., Ragab, I. A., Abdelrahman, A. H., Mahmoud, W. A. (2021). 'Comparative Study between Efficacy of Serratus Anterior Muscle Block as A Regional Analgesia Technique and I.V Morphine Infusion in Patient with Fracture Ribs', The Egyptian Journal of Hospital Medicine, 82(2), pp. 348-252. doi: 10.21608/ejhm.2021.144900