More Groups
Fewer Groups
More People
Fewer People
Zelefsky, M. J.; Fuks, Z.; Happersett, L.; Lee, H. J.; Ling, C. C.; Burman, C. M.; Hunt, M.; Venkatraman, E. S.; Jackson, A. A.; Leibel, S. A. International Journal of Radiation Oncology, Biology, Physics (1999)