Validity and reliability of secondary sources

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National Institutes of Health's National Library of Medicine and is on a government website, which further enhances its credibility. The source itself was published by the U.S. He currently works as an oncologist in North Warren, PA, USA.

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Amer, is a highly qualified medical professional who specialises in hematology and oncology and has over 21 years of experience in his field.

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Hey, nickclarke! (This is the source I'll use to show you some examples of analysing secondary data: ) When assessing the reliability of data from a secondary source, you want to answer 2 main questions (plus 1 bonus one): - What is the credibility of the source? (Who wrote the information? Do they have the authority or expertise in this area?) E.g.

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