M. KHALID, M. ASHFAQ, A. OBAID, H. JAVED, A. IQBAL, and M. BUTT, “EFFECTIVENESS OF 25G COMPARED TO 27G QUINCKE SPINAL NEEDLE IN REGARD OF POST-DURAL PUNCTURE HEADACHE IN OBSTETRICS PATIENTS UNDERGOING SPINAL ANESTHESIA”, Biol Clin Sci Res J, vol. 2023, no. 1, p. 359, Jun. 2023.