Brain Tumors in ChildrenNEJM 331:1500-1507, Pollack,I.F., 1994
Brain TumorsNEJM 324:1471-1476, 1555-15641991., Black,P.McL., 1991
Brain Tumors in ChildrenJ Pediatr 114:511-519, Kadota,R.P.,et al, 1989