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Four hundred and ninety-six NSCLC patients with the smoking status pooled in four studies.
Notes: Aberrant CXCR4 expression was not strongly associated with the smoking status in NSCLC patients (OR=1.22, 95% CI=0.79–1.89, P=0.37).
Abbreviations: CI, confidence interval; M-H, Mantel-Haenszel; NSCLC, non-small cell lung cancer; OR, odds ratio; CXCR4, chemokine receptor type 4.
