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100   $a20040921d2001      ua             0
101 0 $aspa
135   $aurmn||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 00$aH. pylori y u?lcera pe?ptica$b[electronic resource]
210  1$aBethesda, MD :$cNational Digestive Diseases Information Clearinghouse,$d2001.
225 1 $aNIH publication ;$vno. 02-4225 S
300   $aTitle from title screen (viewed on Sept. 20, 2004).
300   $a"Noviembre 2001."
320   $aIncludes bibliographical references.
606   $aPeptic ulcer$zUnited States
606   $aHelicobacter pylori infections$zUnited States
615  0$aPeptic ulcer
615  0$aHelicobacter pylori infections
712 02$aNational Digestive Diseases Information Clearinghouse (U.S.)
801  0$bGPO
801  1$bGPO
906   $aBOOK
912   $a9910693068903321
996   $aH. pylori y u?lcera pe?ptica$93156834
997   $aUNINA