Comparisons that start with the identification of persons with the disease or outcome of interest and a control (comparison, referent) group without the disease or outcome of interest. The relationship of an attribute is examined by comparing both groups with regard to the frequency or levels of outcome over time.
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(56) - ARTICLES
(13) - CiBaMed
(27) - BOOKS
subject heading
openseadragon
Number of the records: 1
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