[1] NAGASAKI UNIV,SCI DATA CTR ATOM BOMB DISASTER,SCH MED,DEPT PATHOL,NAGASAKI 852,JAPAN
[2] NAGASAKI CHUO NATL HOSP,DEPT NEUROSURG,OMURA,JAPAN
[3] NAGASAKI UNIV,SCH MED,DEPT INTERNAL MED 1,NAGASAKI 852,JAPAN
[4] NAGASAKI UNIV,SCH MED,DEPT HEMATOL,NAGASAKI 852,JAPAN
[5] NAGASAKI CHUO NATL HOSP,DEPT PATHOL,OMURA,JAPAN