(From April 2004) WASHINGTON - John Kerry has a piece of shrapnel in his left thigh from an injury he suffered in the Vietnam War, his doctor said Friday during a review of 36 pages of the Democratic presidential candidate's military medical records. The records shown briefly to reporters provided a few more details about the wounds that resulted in Kerry's three Purple Hearts and show that he suffered from respiratory ailments, a skin rash and a minor urinary tract infection during his four years in the Navy. Kerry was wounded three times while commanding a swiftboat in Vietnam's Mekong...