1. Angelino, P. F. undV. Levi, Min. Cardioangiol.4, 174 (1956).
2. Araujo, J. undD. Lukas, J. Clin. Invest.31, 1082 (1952).
3. Aviado, D. M. jr undC. F. Schmidt, J. Pharmacol. exper. Ther.120, 512 (1957).
4. Baker, C., R. C. Brock, M. Campbell undP. Wood, Brit. med. J.1952, 1, 1043.
5. Balchum, O. J., G. Gensini undG. S. Blount, jr., J. Lab. and Clin. Med.50, 186 (1957).