Romana Kanwal, Riffat Saeed, Amer Latif, Tooba Ammar, Hussam Ahmad, Saeeda Rana. Comparison between Effectiveness of Epidural Catheter by Using Two Techniques Air Versus Saline as Pre-Emptive Analgesia in Obstetric Patients. Pakistan Journal of Medical & Health Sciences [Internet]. 2024 Jan. 31 [cited 2025 Dec. 5];18(01):223. Available from: https://www.pjmhsonline.com/index.php/pjmhs/article/view/6188