Oil prices slip on doubts over output cuts

By Christopher Johnson LONDON (Reuters) - Oil prices slipped on Monday, pressured by doubts that large oil producers will reduce production as promised and on expectations that U.S. production would increase again this year. Benchmark Brent crude oil was down 10 cents a barrel at $55.35 by 0915 GMT and U.S. light crude fell 10 cents to $52.27. The Organisation of the Petroleum Exporting Countries (OPEC) has agreed to cut production by 1.2 million barrels per day (bpd) to 32.5 million bpd from Ja