1. American Trudeau Society (1952). Amer. Rev. Tuberc., 65, 100.
2. C., Oda, U., and Middlebrook, G. (1954).
3. Coletsos, P. J. (1952). Ann. Inst. Pasteur, 83, 491.
4. Djang, A. H. K., Bogen, E., and Will, D. W. (1952). Dis. Chest, 22, 458.
5. Medical Research Council (1950). Brit. med. J., 2, 1073.