Republicans may have inadvertently saved ex-President Bill Clinton's life this week, a Boston doctor said Saturday, by staging a convention that got his blood boiling and caused symptoms of his heart blockage to surface for the first time. "Listening to Republican speeches at the convention could have increased Clinton's adrenaline and set things off," Dr. Christopher Cannon, of Boston's Brigham and Women's Hospital, told the New York Post. Calling from his bed at Columbia-Presbyterian Hospital in New York, Clinton told CNN's Larry King Friday night that he sought medical help only "when I finally got some tightness in my chest."...