1. Ellis, F.R., Halsall, P.J., Ording, H., Fletcher, R., Ranklev, E., Heffron, J.J.A., Lehane, M., Mortier, W., Steinbereitner, K., Sporn, P., Theunynck, D. and Verburg, R. Br. J. Anaesth. 1984;56:1267.
2. Harriman, D.G.F. In: Adams, J.H., Corsellis, J.A.N, and Duchen, L.W. (eds.). Greenfield’s Neuropathology, Fourth Edition. 1984: London, Edward Arnold.
3. Isaacs, H. and Barlow, M.B. Brit. Med. J. 1970;1:275.
4. Steers, A.J.W., Tallack, J.A. and Thompson, D.E.A. Brit. Med. J. 1970;2:341.
5. Harriman, D.G.F. In: Mastaglia, F.L. and Walton, Sir J. (eds.). Skeletal Muscle Pathology. 1982. Edinburgh, London, Melbourne, New York: Churchill Livingstone.