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مصطلحات موضوعية: COVID-19, scientific publication, fraud, causes of withdrawal, ethics committees, COVID-19, publicaci��n cient��fica, fraude, causas de retracci��n, comit��s de ��tica
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::546ea5b80580dcd8414b4471eca45fad