Dani C, Lori I, Favelli F, Frosini S, Messner H, Wanker P, De Marini S, Oretti C, Boldrini A, Massimiliano C, Bragetti P, Germini C. Lutein and zeaxanthin supplementation in preterm infants to prevent retinopathy of prematurity: a randomized controlled study. J Matern Fetal Neonatal Med 2012;25(5):523-7.