Khalil, M. M. I., Deabes, S. M., Amer, Y. A. (2019). 'Comparative Study between Doppler-Guided Haemorrhoidal Artery Ligation (HAL) and Conventional Haemorrhoidectomy for Treatment of III& IV Degree Haemorrhoids', The Egyptian Journal of Hospital Medicine, 75(6), pp. 3113-3118. doi: 10.21608/ejhm.2019.34253