From the *Department of Ophthalmology and Visual Sciences, University of San Raffaele Hospital, and *San Giuseppe Hospital, Milan, Italy. Reprint requests: Prof. Rosario Brancato, MD, Department of Ophthalmology and Visual Sciences, University Hospital San Raffaele, Via Olgettina, 60, 20132 Milan, Italy.
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Pece et al. (2001) studied this question.
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