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Verezen CA, Völker-Dieben HJ, Hoyng CB.Verezen CA, et al. Among authors: hoyng cb.Optom Vis Sci. 1996 Jun;73(6):413-7. doi: 10.1097/00006324-199606000-00009.Optom Vis Sci. 1996.PMID: 8807653