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In nursing education and research, literature review is a critical step that helps in identifying gaps in knowledge, framing research questions, and guiding evidence-based practice. Sources of literature for review can be broadly classified into primary, secondary, and tertiary sources. Primary sources include original research articles, clinical trials, case studies, and dissertations. For example, _______ ____ ______ ____ _____ ___ _____ __________ ________ _____ _____ ____.
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