Impact of Bronchopulmonary Dysplasia, Brain Injury, and Severe Retinopathy on the Outcome of Extremely Low-Birth-Weight Infants at 18 Months
JAMA 289:1124-1129, Schmidt,B.,et al, 2003
Functional Abilities at Age 4 Years of Children Born Before 29 Weeks of Gestation
BMJ 306:1715-1718, Johnson,A.,et al, 1993