| Literature DB >> 15066694 |
Renzo Rozzini, Tony Sabatini, Piera Barbisoni, Marco Trabucchi.
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Year: 2004 PMID: 15066694 DOI: 10.1016/j.jclinepi.2003.08.001
Source DB: PubMed Journal: J Clin Epidemiol ISSN: 0895-4356 Impact factor: 6.437