Many people around the world suffer from chronic pain - from pain in the joints to migraines to abdominal pain. Many scientists now believe that kind of pain - in whatever part of the body - has a common connection to the brain. The University of California Los Angeles is now developing an international database of brain images of hundreds of chronic pain patients. So far, they include people from North America and Europe. The goal: to accelerate research and develop better ways to treat chronic pain. Elizabeth Lee reports for VOA from Los Angeles.