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Bornstein SR, Ehrhart-Bornstein M, Scherbaum WA.Bornstein SR, et al.Microsc Res Tech. 1997 Mar 15;36(6):520-33. doi: 10.1002/(SICI)1097-0029(19970315)36:6<520::AID-JEMT9>3.0.CO;2-L.Microsc Res Tech. 1997.PMID: 9142698Review.