The<unk>  <unk>  is a non-profit organization started by the World Health Organization and the US National Heart, Lung, and Blood Institute in 1997 to improve care for<unk><unk>  pulmonary<unk>  (COPD). They have organized the annual awareness day, World COPD Day, every November since 2002. This organization issues recommendations for the treatment of<unk><unk>  pulmonary<unk>  and related medical conditions.<unk>  issued its first formal recommendations in 2001. Their approach departed from previous medical guidelines in two significant respects: * Previous recommendations were usually written by groups of experts, usually from a single medical specialty, partly on the basis of their own experiences. They were the first to evaluate the levels of evidence that supported their recommendations.<unk> 's approach to evidence-based medicine was more rigorous than the previous COPD recommendations, but other organizations, including the National Institute for Health and Care Excellence, use more complex systems. *<unk> 's recommendations are also updated more frequently than was typical in the past. This allows the recommendations to include newer evidence.
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