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Vinciguerra, Paolo; Albé, Elena; Frueh, Beatrice E; Trazza, Silvia; Epstein, Daniel (2012). Two-Year Corneal Cross-Linking Results in Patients Younger than 18 Years with Documented Progressive Keratoconus. American journal of ophthalmology, 154(3), pp. 520-6. New York, N.Y.: Elsevier Science 10.1016/j.ajo.2012.03.020
