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March 23 (Reuters) - U.S. stocks opened lower on Wednesday as oil prices fell and investors backed away from risk in a week marred by the attacks in Brussels and shortened by the Good Friday holiday.
The Dow Jones industrial average fell 23.45 points, or 0.13 percent, to 17,559.12, the S&P 500 lost 2.92 points, or 0.14 percent, to 2,046.88 and the Nasdaq composite dropped 8.09 points, or 0.17 percent, to 4,813.57. (Reporting by Tanya Agrawal; Editing by Don Sebastian)