Relationship between different sources of drinking water,water quality improvement and gastric cancer mortality in Changle County--A retrospectivecohort study in high incidence area

摘要

Ｒｅｌａｔｉｏｎｓｈｉｐｂｅｔｗｅｅｎｄｉｆｅｒｅｎｔｓｏｕｒｃｅｓｏｆｄｒｉｎｋｉｎｇｗａｔｅｒ，ｗａｔｅｒｑｕａｌｉｔｙｉｍｐｒｏｖｅｍｅｎｔａｎｄｇａｓｔｒｉｃｃａｎｃｅｒｍｏｒｔａｌｉｔｙｉｎＣｈａｎｇｌｅＣｏｕｎｔｙ———Ａｒｅｔｒｏｓｐ...