1. El Rifi, K., Bacon, B., Mehigan, J., Hoppe, E., and Cole, W. H., Arch. Surg., 91, 625 (1965).
2. Lewis, M. R., and Cole, W. H., Arch. Surg., 77, 621 (1958).
3. Cole, W. H., McDonald, G. O., Roberts, S. S., and Southwick, H. W., in Dissemination of Cancer (Appleton-Century Crofts, New York, 1961).
4. Saba, T. M., and Di Luzio, N. R., Surgery, 65, 802 (1969).
5. Donovan, A. J., Arch. Surg., 94, 247 (1967).