More Groups
Fewer Groups
More People
Fewer People
Hu, K.; Minsky, B. D.; Cohen, A. M.; Kelsen, D. P.; Guillem, J. G.; Paty, P.; Quan, S. H. Journal of Surgical Oncology (1999)
Rivoire, M. L.; Yoshida, K.; Voiglio, E. J.; Divgi, C. R.; Niedzwiecki, D.; Chapman, D.; Cohen, A. M.; Sigurdson, E. R. Journal of Surgical Oncology (1993)
Schroy, P. C.; Cohen, A.; Winawer, S. J.; Friedman, E. A. Journal of Surgical Oncology (1990)