1. Pachymeningitis cervicalis hypertrophica syphilitica;Asdal;Acta Derm Venereol (Stockh),1980
2. Paget's disease of bone;Barry,1969
3. Spontaneous cervical epidural haematoma;Beatty,1984
4. Ossification in extradural fat in Paget's disease of the spine;Clarke;Br J Surg,1975
5. Compression of the spinal cord by osteitis deformans;Colclough;Surgery,1949