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PubMed Unique Identifier [PMID]
To search by the PubMed Unique Identifier (PMID):
- Use the [pmid] tag if you wish.
To search for several unique identifiers, enter each number in the query box separated by a space. Do not add the [pmid] tag or the Boolean operator as PubMed takes care of this for you.
The institutional affiliation (address) of the first author is taken from the article.
- Use [ad] to qualify affiliation or address of the first author.
cleveland[ad] AND clinic[ad] [Show Me]
national[ad] AND eye[ad] AND institute[ad]
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Last reviewed: 3 April 2013
Last updated: 2 November 2009
First published: 20 March 2001
Metadata| Permanence level: Permanent: Dynamic Content