System errors have a large impact on medical malpractice claims, but did you know they contributed to 30 percent of settled claims? They do, according to a study by one of the largest doctor-run medical malpractice carriers. Dr. Richard Anderson, chairman and chief executive officer of Napa, Calif.-based national malpractice carrier, The Doctors Company, tells the Chicago Tribune's Bruce Japsen about the kind of errors contributing to settled claims, and ways physicians can avoid them.