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Hits 1437  Download times 998  Received:November 10, 1999  
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DOI   10.11656/j.issn.1672-1519.2000.04.27
Key Words   
Author NameAffiliation
刘洞顺 天津市民政老年病医院 300111 
郑辉 天津市听力康复中心 300074 
张丽娟 天津市民政老年病医院 300111 
Abstract
    

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