Muhammad Idrees, Iram Shahzadi, Maryam Sultana, Hasnain Ameer Hamza 2023. Comparison of Tramadol Infusion Versus Tramadol Boluses for Postoperative Pain in Patients Undergoing Lower Abdominal Surgeries. Pakistan Journal of Medical & Health Sciences. 17, 02 (Apr. 2023), 577. DOI:https://doi.org/10.53350/pjmhs2023172577.