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Papageorgiou E, Hardiess G, Ackermann H, Wiethoelter H, Dietz K, Mallot HA, Schiefer U.Papageorgiou E, et al. Among authors: schiefer u.Vision Res. 2012 Jan 1;52(1):20-30. doi: 10.1016/j.visres.2011.10.019. Epub 2011 Nov 12.Vision Res. 2012.PMID: 22100816Free article.