Felsööry A, Crue B L
Department of Neurosurgery, City of Hope National Medical Center, Duarte, Calif., and Division of Clinical Neurology, Pain Center, City of Hope National Medical Center, Duarte, Calif.U.S.A.
Pain. 1976 Dec;2(4):431-433. doi: 10.1016/0304-3959(76)90083-X.