1. Aronson, J. D.: Protective vaccination against tuberculosis with special reference to BCG vaccination. Amer. Rev. Tuberc. 58, 255 (1948)
2. Berkeley, J. C.: BCG and leukemia mortality. Lancet 2, 241 (1971)
3. Bloom, W.: Embryogenic genesis of mammalian blood. In: Handbook of Hematology, Downey, H. (ed.), New York: Paul Hoeber, 1938, p. 865
4. Comstock, G. W., Livesay, V. T., Webster, R. G.: Leukemia and BCG. Lancet 2, 1062 (1971)
5. Crispen, R. G.: Immunoprophylaxis with BCG. In: Neoplasm Immunity: BCG Vaccination, Crispen, R. G. (ed.), Chicago, Ill. Schori Press, 1974