ALDH2 and atrial fibrillation: Moderate and heavy drinkers with the ALDH2 wild-type allele (OR: 1.79; 95% confidence interval [CI]: 1.12-2.85; P = 0.01; OR: 3.07; 95% CI: 1.77-5.34; P < 0.001) and moderate drinkers with the ALDH2∗1/∗2 allele (OR: 5.07; 95% CI: 2.03-12.70; P < 0.001) were positively correlated with AF risk.