[A historical cohort study on the effect of drinking water improvement to the mortality of esophageal carcinoma among Linzhou residents].
Han
Jian-ying
JY
Anyang City Center for Disease Control and Prevention, Anyang 455000, China.
Xu
Zhi-xiang
ZX
Xing
Hai-ping
HP
D002277:Carcinoma / Q000453:epidemiology* / Q000401:mortality*; D004938:Esophageal Neoplasms / Q000453:epidemiology* / Q000401:mortality*; D006801:Humans; D014881:Water Supply