The guidelines suggest that institution-specific protocols should screen for high-risk patients, as blood conservation interventions are likely to be most productive for this high-risk subset.

指南建议，针对机构的操作规程应当筛选高危患者，应为高危部分的患者是血液保护干预最有效果的。

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This practice can result in dolphin mortality as the tuna are captured, although dolphin death has declined significantly since the institution of the International Dolphin Conservation Program, which places independent observers on all Mexican tuna fishing vessels in the region.

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Dr Julia Baum, a marine ecologist at the Scripps Institution of Oceanography, US, and a member of the World Conservation Union (IUCN), said excessive fishing was putting many of the ocean's "most majestic predators" at risk of extinction.

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