More Groups
Fewer Groups
More People
Fewer People
Kawai, A.; Lin, P. P.; Boland, P. J.; Athanasian, E. A.; Healey, J. H. Journal of Surgical Oncology (1999)
Hu, K.; Minsky, B. D.; Cohen, A. M.; Kelsen, D. P.; Guillem, J. G.; Paty, P.; Quan, S. H. Journal of Surgical Oncology (1999)