1. Alergant, C. D. (1957). Brit. J. vener. Dis., 33, 47.
2. Alergant, C. D. (1961). Ibid., 37, 270.
3. Personal communication;Barwell, C.F.; King, A.J.;Canizares; Modern Diagnosis and Treatment of the Minor Venereal Diseases,1962
4. Thomas, Springfield, Ill. Erskine, D. (1958). Brit.J.vener. Dis., 43, 163. Fluker, J. L. (1963). Ibid., 39, 24.
5. Galbraith, H-J. B., Graham-Stewart, C. W., and Nicol, C. S. (1957). Brit. med. J., 2, 1402.