Mohamed Anwer Rifky, Mohamed Mowafy Khattab, Ayman Fathy Zeid, Ahmed Sobhy Hegab, and Basmah Ahmed Abdelrahman Alrobaa, “A Comparative Study on Preprocedure Ultrasound-Guided Midline Spinal Anaesthesia and Conventional Landmarks Technique”, RDMMS-V1, pp. 176–186, Feb. 2023.