A recent article in the Proceedings of the National Academy of Science (PNAS) examines the cause of retractions involving more than 2000 articles published in biomedical and life-science-related journals.1 Of these, nearly 70% were retracted due to author misconduct, with the most common problem being suspected fraud (43.4%), followed by duplications and plagiarism. When compared with data obtained in 1975, the incidence of misconduct-related retractions has increased 10-fold.
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