Peter Martin, M.D., professor of Psychiatry and Pharmacology, signs a copy of his new book, "Healing Addiction: an Integrated Pharmacopsychosocial Approach to Treatment," for third-year VUSM student Heather Burks on Tuesday in 208 Light Hall. One hundred copies of the book were purchased for all third-year medical students by Fredrick Viehmann, who met Martin while working out at the Dayani Center.