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Steinberg JS, Auge J, Jaffe GJ, Fleckenstein M, Holz FG, Schmitz-Valckenberg S; GAP Study Group.Steinberg JS, et al.Invest Ophthalmol Vis Sci. 2013 Jun 10;54(6):4054-60. doi: 10.1167/iovs.12-11538.Invest Ophthalmol Vis Sci. 2013.PMID: 23633663Clinical Trial.