Institution: | Institute for Surgical Research, Norwegian National Hospital (E.O.V.-M., C.S., H.O., M.V., W.M., I.A.L.), Department of Neurosurgery, Ulleval University Hospital (E.O.V.-M., H.O., M.V., I.A.L.), Department of Cancer Genetics, Norwegian Radium Hospital (P.B.), Department of Neurosurgery, Norwegian National Hospital (J.R.-P.), Oslo University Hospital, Oslo, Norway |