“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 April 8, 2025.
https://preservation.bmrat.org/index.php/BMRAT/article/view/744.