Of 43 consecutive patients undergoing this treatment protocol, 39 reported remaining abstinent from tobacco use at follow-up (6 months to 3 years post-treatment). This represents a 90.6% success rate using hypnosis. University of Washington School of Medicine, Depts. of Anesthesiology and Rehabilitation Medicine, Int J Clin Exp Hypn. 2001 Jul;49(3):257-66. Barber J.