Sehitogulları A, Aslan M, Sayır F, Kahraman A, Demir H. Serum paraoxonase-1 enzyme activities and oxidative stress levels in patients with esophageal squamous cell carcinoma. Redox Report. 2014 Apr 14;19(5):199–205. doi: 10.1179/1351000214y.0000000091.