Ciência observacional (Portuguese Wikipedia)

Analysis of information sources in references of the Wikipedia article "Ciência observacional" in Portuguese language version.

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nih.gov

von Elm E, Altman DG, Egger M, Pocock SJ, Gøtzsche PC, Vandenbroucke JP (2007). "The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) Statement: Guidelines for Reporting Observational Studies". PLoS Med. 4 (10): e296. doi:10.1371/journal.pmed.0040296. PMC 2020495. PMID 17941714.