KHALID , M., ASHFAQ , M., OBAID , A., JAVED , H., IQBAL , A. and BUTT , M. 2023. EFFECTIVENESS OF 25G COMPARED TO 27G QUINCKE SPINAL NEEDLE IN REGARD OF POST-DURAL PUNCTURE HEADACHE IN OBSTETRICS PATIENTS UNDERGOING SPINAL ANESTHESIA. Biological and Clinical Sciences Research Journal. 2023, 1 (Jun. 2023), 359. DOI:https://doi.org/10.54112/bcsrj.v2023i1.359.