Comparison of the pain-killing effects of leech therapy versus physiotherapy in patients with knee osteoarthritis: A double-blind randomized clinical trial. Biomed. Res. Ther. [Internet]. 2022 Jun. 30 [cited 2024 Nov. 15];9(6):5095-101. Available from: https://preservation.bmrat.org/index.php/BMRAT/article/view/744