1. Wang, H.S. In Aging and Dementia, Smith, W.L. and Kinsboume, M., Eds. Spectrum, New York, 1–24, 1977.
2. Plum, F. Nature 279, 372–373, 1979.
3. Blessed, G., Tomlinson, B.E. & Roth, M. Br. J. Psychiat. 114, 797–811, 1968.
4. Wilcock, G.K. & Esiri, M.M. J. Neurol. Sci. 56, 343–356, 1982.
5. Perry, E.K., Tomlinson, B.E., Blessed, G., et al. Br. Med. J. 2, 1457–1459, 1978.