Yusra Arshad Shahani, Muhammad Zaheer Ud Din, Humaira Jadoon, Aadrish Hadeed Shahani 2025. Comparison of Onset of Sensory Block and Height of Sensory Block when Subarachnoid Block is Performed at L2-L3 versus L3-L4 level in Obstetric Patients undergoing Caesarean Section . International Journal of Pharmacy Research & Technology (IJPRT). 15, 2 (Sep. 2025), 2293–2298.