Comparison of the effect of Laser Therapy and Therapeutic Ultrasound in the Management of Chronic Osteoarthritic Knee Pain: A Randomised Controlled Trail. Nig J Med Rehab [Internet]. 2012 Dec. 20 [cited 2025 Apr. 3];15(1.2):1-5. Available from: https://njmr.mrtb.gov.ng/index.php/njmr/article/view/50