“Comparison of the Pain-Killing Effects of Leech Therapy Versus Physiotherapy in Patients With Knee Osteoarthritis: A Double-Blind Randomized Clinical Trial”. Biomedical Research and Therapy 9, no. 6 (June 30, 2022): 5095–5101. Accessed November 15, 2024. https://preservation.bmrat.org/index.php/BMRAT/article/view/744.