Hardy, R. J., Good, W. V., Dobson, V. ., Palmer, E. ., Tung, B. ., Phelps, D. ., … van Heuven, W. . (2006). The Early Treatment for Retinopathy of Prematurity Clinical Trial: Presentation by subgroups versus analysis within subgroups. The British Journal of Ophthalmology, 90(11), 1341-2. 10.1136/bjo.2006.102038 (Original work published 2006)
