[epidemiologic and endoscopic aspects of helicobacter pylori infection in vientiane, laos]. | from january 1996 to march 1997, helicobacter pylori infection was studied prospectively for 200 consecutive patients presenting with epigastric pain. 29 of them were excluded. bacteriological (gram, clo-test) and histological methods were used to identify the bacteria from the gastric mycosis samples. overall prevalence of infection was 68.4% with no differences according to age and sex; infection was more frequent for patients with duodenal ulcers (80%) than for those with normal endoscopical ... | 2000 | 10863608 |