Experts were contacted. Conference proceedings and reference lists were manually searched.

联系专家，手工检索相关的会议资料和参考资料。

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We also checked the reference lists of existing systematic reviews and of all trials identified by the above methods.

还查看了现有系统评价文献以及上述方法确定的所有试验的参考资料目录。

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Seventy-five relevant papers focusing on COPD, anxiety, and depression were identified, and others were found from the reference lists of these articles.

他们找到了75篇关注COPD、焦虑和抑郁的有关论文。其他文章是从这些文章的参考书目中发现的。

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In showbiz reference books Mr Faye lists a dozen films in which he supplied comic diversion to the likes of Gary Cooper, John Wayne and Cary Grant, and a dozen shows in which he starred in television.

ECONOMIST: Joey Faye | The

Alternatively, reference can be made to a publication called the 'Insurance Directory' which lists companies, or to the Register of Friendly Societies which also offers ways of tracing assets.

BBC: Wake up call for dormant accounts

By bringing many OA-related lists together in one place, OAD makes it easier for everyone to discover them, use them for reference, and update them.

UNESCO: Global Open Access Portal