Functional Abilities at Age 4 Years of Children Born Before 29 Weeks of Gestation
BMJ 306:1715-1718, Johnson,A.,et al, 1993
Eight-Year Outcome in Infants with Birth Weight of 500 to 999 Grams
Victorial Infant Collabor, Study Group, J Pediatr 118:761-767991., , 1991
Neurodevelopmental Outcome in Babies Weighing Less than 2001 g at Birth
BMJ 294:1582-1586, Marlow,M.,et al, 1987