1. Chinachoti, N., and Tangchai, P. (1957). Dis. Chest, 32, 687.
2. Finkbiner, R. B., Decker, J. P., and Cooper, D. A. (1957). Amer. Rev. Tuberc., 76, 122.
3. Friedreich, N. (1856). Virchows Arch. path. Anat., 9, 613.
4. Kent, G., Gilbert, E. S., and Meyer, H. H. (1955). A.M.A. Arch. Path., 60, 556.
5. Mikhailov, V. (1954). Klin. med. (Mosk.), 32, No. 3, p. 31.