1. Kusserow, B. K., and Clapp, J. F., Trans. Amer. Soc. Artif. Int. Organs, 12, 121 (1966).
2. Nevaril, C. G., Lynch, E. C., Alfrey, C. P., and Hellums, J. D., J. Lab. Clin. Med., 71, 784 (1968).
3. Kusserow, B. K., Machanic, B., Collins, F. M., and Clapp, J. E., Trans. Amer. Soc. Artif. Int. Organs, 11, 122 (1965).
4. Galletti, P. M., J. Surg. Res., 5, 97 (1965).
5. Indeglia, R. A., Shea, M. A., Forstrom, R., and Bernstein, E. F., Trans. Amer. Soc. Artif. Int. Organs, 14, 264 (1968).