| helicobacter pylori infection appears essential for stomach carcinogenesis: observations in semarang, indonesia. | the gastric cancer incidence in semarang, indonesia, is exceedingly low: only approximately 1/100th of the level in japan. to elucidate the reason, we carried out an ecological study recruiting 69 male and 102 female participants from the general populace in january 2005. positive urea breath tests were 0% for both men and women, and helicobacter pylori (h. pylori) igg antibodies were found in 2% (0-5, 95% confidence interval) of men and 2% (0-4) of women, significantly lower than the 62% (58-65 ... | 2005 | 16367906 |