Prof. Dr. Howard Amital, MD, Director, Department of Internal Medicine B and Research Center for Autoimmune Diseases in Sheba Medical Center, which is affiliated with the Sackler Faculty of Medicine in Tel Aviv University, Israel. His interest is in cannabis therapy and research in patients treated with diverse cannabis products (e.g. rheumatoid arthritis, osteoarthritis, fibromyalgia, and Chronic Fatigue Syndrome) on the level of T cell response, mRNA by RT-PCR.