| rare helicobacter pylori infection may explain low stomach cancer incidence: ecological observations in bali, indonesia. | the incidence rate of stomach cancer in bali, indonesia, is estimated to be strikingly lower than that in japan. we conducted an on-site ecological study to investigate the association between the stomach cancer incidence and helicobacter pylori (h. pylori) infection. recruiting 291 healthy persons (136 men and 155 women) from the general population in bali, indonesia, we conducted a urea breath test (ubt) to examine h. pylori infection, along with a pepsinogen test to detect chronic atrophic ga ... | 2016 | 27039823 |