| Literature DB >> 15528619 |
John Schmittner1, Jennifer R Schroeder, David H Epstein, Kenzie L Preston.
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Year: 2004 PMID: 15528619 PMCID: PMC526119 DOI: 10.1136/bmj.329.7474.1075
Source DB: PubMed Journal: BMJ ISSN: 0959-8138