1[1]Dorfman H D, Czerniak B. Bone cancers[J]. Cancer,1995,75(1 Suppl) :203.
2[2]McMaster M L, Goldstein A M, Bromley C M, et al.Chordoma:incidence and survival patterns in the United States, 1973-1995[J]. Cancer Causes Control, 2001,12(1):1.
3[3]Radner H, Katenkamp D, Reifenberger G, et al. New developments in the pathology of skull base tumors [J]. Virchows Arch, 2001,438(4) :321.
