N. M Bressler, A. R Edwards, R. W Beck, C. J Flaxel, A. R Glassman, M. S Ip, C Kollman, B. D Kuppermann, T. W Stone and for the Diabetic Retinopathy Clinical Research Network
Archives of Ophthalmology 127 ( 12 ): 1566 - 1571 , 2009