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Methods : This study was conducted in English by November 2017 through a search in databases of the PubMed, Scopus and Web of Science

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But there was nothing like what they did to OSH. A spokesperson for the Department of Health and Human Services wrote that it is committed to investigating any potential roof [sic] causes of the chronic disease epidemic

To further confirm this chain of causal inference, we implemented a modified Mendelian randomisation (MR) analysis to investigate potential causal effects by introducing non-pleiotropic polygenic risk scores (PRS) as instrument variables, i.e., the valid-PRS (see Methods for more details) 35,36