for comparison purposes patients were divided into four groups : calla- ( cd10- ) infants less than 2 years of age at diagnosis ( n = 10 ) , calla- children greater than 2 years of age at diagnosis ( n = 10 ) , calla+ infants ( less than 2 years , n = 21 ) and calla+ children ( older than 2 years , n = 21 ) .
C0021270
infants
C0008059
children