1. Barber, H. W. (1945). Proc. R. Soc. Med., 39, 92.
2. Coleman, C. C., and Meredith, J. M. (1940). Arch. Neurol. Psychiat., Chicago, 44, 1076.
3. Escamilla, R. F., and Lisser, H. (1942). J. clin. Endocrinol., 2, 65.
4. Farquharson, R. F., and Graham, D. (1931). Trans. Ass. Amer. Phys., 46, 150.
5. Fraser, R. W., Forbes, A. P., Albright, F., Sulkowitch, H., and Reifenstein, E. C. (1941).