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Boothroyd JC, Black M, Bonnefoy S, Hehl A, Knoll LJ, Manger ID, Ortega-Barria E, Tomavo S.Boothroyd JC, et al.Philos Trans R Soc Lond B Biol Sci. 1997 Sep 29;352(1359):1347-54. doi: 10.1098/rstb.1997.0119.Philos Trans R Soc Lond B Biol Sci. 1997.PMID: 9355126Free PMC article.