![]() Parentheses work in most but not all systems (e.g., they work on the Ovid, PubMed, EBSCOhost, ProQuest, Scopus, and Web of Science platforms, but they are ignored in Google and Google Scholar)Į.g., (chest OR thorax OR thoracic) AND (imaging OR radiographs OR radiography) Use parentheses to set the order of execution of the Boolean logic. Please see the database-specific operators and search fields. ![]()
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