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[2] UNIV OSLO,RIKSHOSP,INST FORENS MED,N-0027 OSLO 1,NORWAY
[3] NORWEGIAN RADIUM HOSP,INST CANC RES,DEPT GENET,N-0310 OSLO 3,NORWAY
[4] UNIV TROMSO,N-9000 TROMSO,NORWAY
[5] REG HOSP CORK,POLAR INST MED GENET,N-9000 TROMSO,NORWAY