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Svoboda KK.Svoboda KK.Microsc Res Tech. 1998 Oct 15;43(2):111-22. doi: 10.1002/(SICI)1097-0029(19981015)43:2<111::AID-JEMT4>3.0.CO;2-O.Microsc Res Tech. 1998.PMID: 9822998Review.