Stomach cancer accounts for nearly a quarter of all cancer deaths. Our country is a high-incidence area for stomach cancer, with both annual incidence and mortality rates being more than double the world average. In the second national cause-of-death survey organized by the Ministry of Health from 1990 to 1992, the crude death rate for stomach cancer in China was 25.2 per 100,000 (32.8 per 100,000 for males and...