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Flowchart for data analysis on GxT in the BCPP cohort. GxT, gene-tobacco interaction; BCPP, Bladder Cancer Prognosis Programme; HWE, Hardy-Weinberg equilibrium; SD, standard deviation; IBS, identity by state; PCA, principal component analysis; MAF, minor allele frequency; NMIBC, non-muscle invasive bladder cancer; PCA, principal component analysis; SD, standard deviation; SNP, single nucleotide polymorphism.
