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      <P><A HREF="overview.htm">简介</A>&nbsp; 
      <P><A HREF="index.htm">搜索</A>&nbsp; 
      <P><A HREF="a-search.htm">高级搜索</A>&nbsp; 
      <P><A HREF="pubmedhelp.htm">帮助</A>&nbsp; 
      <P><A HREF="restrictions.htm">使用限制</A>&nbsp; 
      <P><A HREF="http://www.nlm.nih.gov/">美国国家医学图书馆(NLM)主页</A>&nbsp; 
      <P><A HREF="http://www.ncbi.nlm.nih.gov/">美国国家生物技术信息中心(NCBI)主业</A>&nbsp; 
      <P><A HREF="http://www.nih.gov/">美国国家卫生研究院(NIH)主页</A>&nbsp; <BR>
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      <H2> 高级MEDLINE搜索 </H2>
<FORM METHOD="POST" ACTION="http://www.ncbi.nlm.nih.gov/htbin-post/Entrez/query?db=m"><INPUT TYPE="hidden" NAME="db" VALUE="0"><INPUT TYPE="hidden" NAME="form" VALUE="1">
        Search Field:&nbsp; 
        <SELECT NAME="field">
          <option value="Affiliation ">附属</option>
          <option value="All Fields">所有领域</option>
          <option value="Author Name">作者姓名</option>
          <option value="E. C. Number">E. C. 号</option>
          <option value="Issue">期号</option>
          <option value="Journal Name">期刊名</option>
          <option value="Language">语言</option>
          <option value="MeSH Major Topic">MeSH 主题</option>
          <option value="MeSH Terms">MeSH 语句</option>
          <option value="Page">页</option>
          <option value="PublicationDate ">出版日期</option>
          <option value="Publication Type">出版物类</option>
          <option value="Substance Name">物资名称</option>
          <option value="Text Word">文字</option>
          <option value="Title Word">标题字</option>
          <option value="Volume">Volume</option>
          <option value="MEDLINE ID ">MEDLINE ID</option>
          <option value="PubMed ID">PubMed ID</option>
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        Mode:&nbsp; 
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          <option value="Automatic">自动</option>
          <option value="List Terms">列款</option>
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          <INPUT TYPE="submit" NAME="submit" VALUE="搜索">
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        <LI> 输入一个或多个搜索术语&nbsp;</LI>
        <LI> 作者姓名必须输入为”Smith JB”形式</LI>
        <LI> 刊物标题可以完整输入 有效MEDLINE缩写或ISSN数（详情请查看刊物浏览器）</LI>
        <LI>·使用下拉菜单指定字段和搜索模式.</LI>
        <LI>使用”AND,OR,NOT”逻辑操作符在搜索框中直接输入布尔型搜索.&nbsp;</LI>
      </UL>

      <p>如有问题和意见，请直接联系<a href="http://www.nlm.nih.gov/contacts/contact_pubmed.html">PubMed帮助台</a></p>
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