1Tong ZZ,Se D. The time trend and age-period-cohort effects on incidence of adenocarcinoma of the stomach in connecticut form 1955- 1989[J]. Cancer, 1993,15,72(2) :330-340.
2Devesa SS, Blot WJ, Jr Fraumeni .IF. Changing patterns in the incidence of esophageal ang gastric carcinoma in the United States [ J ]. Cancer,1998,15,83(10) :2049-2053.