Moorthy, Soundharya, Sudar Codi, Surendher Kumar, and Manimekalai Kumarappan. 2016. “COMPARISON OF THE EFFICACY AND SAFETY OF TRAMADOL VERSUS TAPENTADOL IN ACUTE OSTEOARTHRITIC KNEE PAIN: A RANDOMIZED, CONTROLLED TRIAL”. Asian Journal of Pharmaceutical and Clinical Research 9 (3):253-56. https://mail.innovareacademics.in/journals/index.php/ajpcr/article/view/11161.