612 / 1816
What happens if you accept focally involved margins ?
Results in The Netherlands:
Margin involvement in 2009:
5 yr IBTR in NL (2003-2006) :
only 2.38%
(2.18-2.60%) !!
N = 22.450
Van der Heiden et al, Ann Oncol 2015
Van der Heiden et al, Br C Res Tr 2012