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Lefevre, C.E, Etchells, P.J, Howell, E.C, Clark, A.P and Penton-Voak, I.S (2014) 'Facial width-to-height ratio predicts self-reported dominance and aggression in males and females, but a measure of masculinity does not.' Biology Letters, 10 (10). e0729. ISSN 1744-9561