RTOG 91-11
RTOG 95-01
46% vs 33% vs 49% (5-y)
25% vs 16% (5-y)
RTOG 0522
RTOG 0129
8-year LRF: p16+ 19%
p16- 52%
20% vs 26% (3-y)
31% vs 34% (5-y)