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Distinct facial expressions represent pain and pleasure across cultures.
Chen C, Crivelli C, Garrod OGB, Schyns PG, Fernández-Dols JM, Jack RE. Chen C, et al. Proc Natl Acad Sci U S A. 2018 Oct 23;115(43):E10013-E10021. doi: 10.1073/pnas.1807862115. Epub 2018 Oct 8. Proc Natl Acad Sci U S A. 2018. PMID: 30297420 Free PMC article.
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