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Basic Pubmed Searching (Ebbert et al. Mayo Clin Proc. 2003; 78: 87-91)
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Advanced Pubmed Searching (Sood et al. Mayo Clin Proc. 2004; 79(10): 1295-1300)
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QUOROM Statement (Moher et al. Lancet 1999; 354: 1896-1900)
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CONSORT Statement (Moher et al. JAMA 2001; 285: 1987-1991)
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Jadad Score (Jadad et al. Controlled Clinical Trials 1996; 17: 1-12)
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GRADE System (Grade Working Group. BMJ Volume 328. June 10, 2004.)

