Elmansy, S., Abdelkhalek, M., Farouk, S., Shoukry, R., Khames, A. (2023). 'Ultrasound -guided erector spinae plane block (ESPB) versus intravenous opioids based analgesia in patients with rib fractures', Egyptian Journal of Anaesthesia, 39(1), pp. 249-254. doi: TEJA-2023-0021