Genotype frequencies of the ADH1B-ADH1C-ADH7 cluster SNPs among cases and controls and their association with ESCC risk.

Note: SNP, single nucleotide polymorphism; ESCC, esophageal squamous cell carcinoma; OR, odds ratio; CI, confidence interval.1Data were calculated by logistic regression with adjustment for age, sex, smoking and drinking status, where it was appropriate.