Michael Jackson has canceled his three remaining European tour dates, in Greece and in Turkey, because of a throat ailment, a spokesman said Tuesday. The 34-year-old pop singer spent Monday night in Britain before flying to New York, said spokesman Jonathan Morrish. He said Jackson saw a throat specialist in London who advised him to seek further treatment in Los Angeles. Jackson caught a cold during a visit to Romania last Thursday. Don't worry. HBO is still televising that concert Saturday.