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Quinnell RJ, Medley GF, Keymer AE.Quinnell RJ, et al.Philos Trans R Soc Lond B Biol Sci. 1990 Nov 29;330(1257):191-201. doi: 10.1098/rstb.1990.0192.Philos Trans R Soc Lond B Biol Sci. 1990.PMID: 1981620Review.