Resolution: standard / high
Figure 2.
Kaplan-Meier Estimates (and 95% Equal Precision Confidence Bands) of recurrence-free
survival for 107 Colorectal Cancer Patients Receiving Nitrogen Gas (solid confidence
bands) and 97 Receiving Nitrous Oxide Gas (dotted confidence bands). Multivariable P = 0.72.
Fleischmann et al. BMC Anesthesiology 2009 9:1 doi:10.1186/1471-2253-9-1
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