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。
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。
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。
The reference lists of the identified papers were also searched.
对相关文献列表也进行了检索。
We also searched reference lists and databases of ongoing trials.
同时，还检索了纳入文章的参考文献及正在进行中的试验数据库。
We searched reference lists, and contacted experts in the field.
我们也寻找了参考文献，并联络此领域专家。
We also searched reference lists of articles and contacted experts in the field.
我们亦搜寻文章上列出的参考文献并与此范畴的专家连络。
We screened reference lists and contacted experts in the field to identify additional studies.
我们核对了参考文献列表并与该领域的专家联系确认其他可能存在的研究。
We checked the reference lists of eligible studies and relevant review articles for additional studies.
为了搜寻额外的试验，我们检视本回顾纳入的试验及其他相关回顾研究的参考文献清单。
Data sources: MEDLINE and Cochrane Database of Systematic Reviews from 1950 to January 2010, reference lists, experts, and unpublished sources.
数据来源：MEDLINE数据库和考克兰系统评价数据库，从1950年到2010年1月，参考文献列表，专家，和未发表的资料。
The Python Library Reference lists the built-in exceptions and their meanings.
python库参考手册列出了内置异常和它们的含义。
The Python Library Reference lists the built-in exceptions and their meanings.
python库参考手册列出了内置异常和它们的含义。
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