when all 47 children with cerebral palsy fulfilling the criteria of the little club of london ( 1959 ) were included , a prenatal risk factor was detected in 13 infants ( 27.7 % ) and a perinatal one in 25 children ( 53.2 % ) , whereas 9 children ( 19.1 % ) represented an untraceable form of this disorder .
C0021270
infants
C0008059
children