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In conventional studies, patients are randomly assigned to a treatment or control group to reduce sources of bias.
WSJ: ALS Study Falls Short, But Use of Social Media Holds Promise
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We worked to control patients' bleeding, to "reduce, " or set, their badly broken bones in an effort to save their limbs, and to administer medication to help their pain and prevent infection.
WSJ: Emily Loving Aaronson: On the Front-Lines of Battlefield Triage in Boston
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It is necessary to reduce that stake below the level at which it can control or direct the way the company acts.
BBC: BAE-EADS merger: France and Germany 'must reduce stake'
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That change, called the Maximum Achievable Control Technology, or MACT, rule requires that coal- and oil-fired power plants reduce pollutant emission rates significantly.
CNN: The war over coal is personal
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Pierre Guillet, of the World Health Organization's global malaria programme, said any strategy that could effectively kill, or the reduce the life expectancy of adult female mosquitoes, had potential as a way to control the spread of malaria.
BBC: The malaria parasite is spread by mosquitoes