4Tran GD,Sun Xiu-Di,Abnet CC,et al.Prospective study of risk factors for esophageal and gastric cancers in the Linxian general population trial cohort in China[J].Int J Cancer,2005,113:456-463.
5Dawsey SM,Lewin KJ,Wang GQ,et al.Squamous esophageal histology and subsequent risk of squamous cell carcinoma of the esophagus.A prospective follow-up study from Linxian,China[J].Cancer,1994,74:1686-1692.
