In people who have either oesophageal or stomach cancer, a step in developing that cancer can be a condition called intestinal metaplasia.

BBC: 'Cancer sign' identified

Anything that helps people look at their own condition has got to be a positive step.

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When I step back from this simulation, I muse that such a condition is unacceptable to business, labor, the unemployed, pensioners and even politicians.

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"Following this initial step forward, we will continue to remain cautious while we assess the Kulluk's condition, " said Martin Padilla, commander of the refloating effort.

NPR: Grounded Shell Oil-Drilling Ship Refloated