Dr. Mehrdad Masoudifar, Dr. Monadi Hamidfar, Dr. Zahra Rahimi. 2021. “Comparative Study of the Effect of Preoperative Clonidine and Tranexamic Acid on the Rate of Bleeding in Lumbar Spine Surgery”. Drugs and Cell Therapies in Hematology 10 (3):539-47. http://www.dcth.org/index.php/journal/article/view/805.