Ayub F, Ahmad A, Aslam KZ, Saleem I. Frequency of headache with 25G or 27G quincke needles after spinal anesthesia in patients undergoing elective cesarean section. apic [Internet]. 19Jan.2019 [cited 3Jul.2024];:170-3. Available from: https://apicareonline.com/index.php/APIC/article/view/106