Retrospective Cohort Study
Copyright ©The Author(s) 2015.
World J Gastroenterol. Jun 14, 2015; 21(22): 6905-6913
Published online Jun 14, 2015. doi: 10.3748/wjg.v21.i22.6905
Figure 2
Figure 2 Cumulative probabilities of overall survival based on age (log-rank test, P = 0. 780).