Self-plagiarism is not easily defined, but should be avoided
Journal of Hand Therapy
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Plagiarism is defined as “to steal and pass off the ideas or words of another as one's own, that is, use another's production without crediting the source” (https://www.merriam-webster.com/dictionary/plagiarize). Plagiarism is considered as academic fraud, and after appropriate consideration can result in retraction of articles, or failing of students who plagiarize during their academic training.