Askanas V, Engel W K, Eagleson K, Micaglio G
USC Neuromuscular Center, Department of Neurology, University of Southern California School of Medicine, Hospital of the Good Samaritan, Los Angeles 90017.
Ann N Y Acad Sci. 1989;553:325-36. doi: 10.1111/j.1749-6632.1989.tb46654.x.