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Perrett DI, Hietanen JK, Oram MW, Benson PJ.Perrett DI, et al. Among authors: oram mw.Philos Trans R Soc Lond B Biol Sci. 1992 Jan 29;335(1273):23-30. doi: 10.1098/rstb.1992.0003.Philos Trans R Soc Lond B Biol Sci. 1992.PMID: 1348133