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2. Intramuscular electrical stimulation of facial muscles in humans and chimpanzees: Duchenne revisited and extended. Waller BM; Vick SJ; Parr LA; Bard KA; Pasqualini MC; Gothard KM; Fuglevand AJ Emotion; 2006 Aug; 6(3):367-82. PubMed ID: 16938079 [TBL] [Abstract][Full Text] [Related]
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14. Asymmetry in facial expression of emotions by chimpanzees. Fernández-Carriba S; Loeches A; Morcillo A; Hopkins WD Neuropsychologia; 2002; 40(9):1523-33. PubMed ID: 11985833 [TBL] [Abstract][Full Text] [Related]
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