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It should be noted that 20% of the articles (68 of 338) in this review were identified through bibliography searches and from expert lists.
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Studies were identified via MEDLINE, and through bibliographies of primary and review articles.
A previously described "snowball" search strategy was also performed in which papers were identified through bibliographies of key studies [ 19].
Further published and unpublished papers were sought by screening through bibliographies of identified articles and writing to authors of identified relevant papers.
As Figure 1 shows, 178 studies were removed from the initial 205 54 on grounds of duplication and 124 because at least one of the four eligibility criteria was not met and 8 were added, following identification through bibliographies and citations.
At the party and, later, reading through the bibliography online, I felt like I'd enjoyed a series of conversations with trusted professors and really good librarians.
Backwards chasing will be conducted manually, through the bibliography of the item in question.
Additional articles were retrieved through the bibliography lists of published reviews, where applicable.
Consideration of entire papers yielded 16 relevant articles and a further 28 were identified through the bibliography.
An additional 68 articles were added through the bibliography and expert-supplied list search for a total of 338 economic evaluations of CIM.
An additional 11 papers or reports were identified through key author searches, 9 through reviewing bibliographies of identified articles and 52 through the website searches.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com