More Groups
Fewer Groups
More People
Fewer People
Zelefsky, M. J.; Lyass, O.; Fuks, Z.; Wolfe, T.; Burman, C.; Ling, C. C.; Leibel, S. A. Journal of Clinical Oncology (1998)
Merchant, T. E.; Davis, B. J.; Sheldon, J. M.; Leibel, S. A. Journal of Clinical Oncology (1998)