| Literature DB >> 22315257 |
Gordon H Guyatt1, Elie A Akl2, Mark Crowther3, David D Gutterman4, Holger J Schuünemann5.
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Year: 2012 PMID: 22315257 PMCID: PMC3278060 DOI: 10.1378/chest.1412S3
Source DB: PubMed Journal: Chest ISSN: 0012-3692 Impact factor: 9.410