President Barack Obama greeted shoppers at the Politics and Prose bookstore in northwest Washington on Saturday.
President Barack Obama greeted shoppers at the Politics and Prose bookstore in northwest Washington on Saturday. Courtesy of UKHealthccare
President Barack Obama greeted shoppers at the Politics and Prose bookstore in northwest Washington on Saturday. Courtesy of UKHealthccare

Commentary: Cancer patients shouldn't be afraid of clinical trials

February 19, 2012 12:00 AM