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Chest. 2009 Jul;136(1):304-5. doi: 10.1378/chest.09-1219.

Update on Registration of Clinical Trials in ClinicalTrials.gov.

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  • 1Lister Hill National Center for Biomedical Communications, National Library of Medicine, National Institutes of Health, Bethesda, MD 20894, USA.
PMID:
19584213
[PubMed - indexed for MEDLINE]
PMCID:
PMC2821288
Free PMC Article
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