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1
Published 2005
National Center for Biotechnology Information
“... Information (NCBI) that includes millions of citations from MEDLINE and other life science journals...”
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2
by Hersh, William R.
Published 2015
Agency for Healthcare Research and Quality (US)
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3
Published 2005
National Center for Biotechnology Information
“... for Biotechnology Information (NCBI). PMC is a digital archive of life sciences journal literature including more...”