1. Rowley, J.D. Nature 301, 290 (1983).
2. Sutherland, G.R. Am. J. hum. Genet. 31, 125 (1979).
3. Sutherland, G.R. Am. J. hum. Genet. 31, 136 (1979).
4. Sutherland, G.R. Int. Rev. Cytol. 81, 107 (1983).
5. Pearson, M.G. et al. Am. Soc. Hemat. 62, 180a (1983).