since 1974 , a neuroblastoma mass screening program for 6-month-old infants by means of a qualitative vanilmandelic acid ( vma ) test has been in effect in kyoto , japan , for the prognostic improvement of neuroblastoma patients ( sawada et al : am j dis child 136:710-712 , 1982 ) .
C0021270
infants
C0008059
child