Questionable Paper 1: CYP2E1 Rsa Ι/Pst Ι polymorphism and lung cancer susceptibility: a meta-analysis involving 10,947 subjects. J Cell Mol Med. 2015 Sep; 19(9): 2136–2142.
Questionable Journal 1: Journal of Cellular and Molecular Medicine (published by Wiley)
Questionable Paper 2: CYP1A2 rs2069514 polymorphism and lung cancer susceptibility: a meta-analysis. Ann Transl Med. 2015 May; 3(7): 93.
Questionable Journal 2: Annals of Translational Medicine
Who can tell which one is the plagiarized paper and which one is the source paper, or both of them were from third party?
When using someone else’s work, you must indicate you have borrowed the idea by giving a citation. Besides, if a source’s exact words have to be copied, quotation marks must be given. However, verbatim copy of large sections of text (including a few sentences, whole paragraph, and several paragraphs) is moderate to most severe type of plagiarism whether or not that work is cited or quotation marks are used, even though the original sources are from author’s own publications.