Chronical gastritis | Number of individuals in subset, who lives in | |||
Radiation contaminated areas | Saint Petersburg | |||
1А | 1B | 2А | 2B | |
Not infected mucous of stomach by Helicobacter pylori | 28 | 0 | 38 | 0 |
Infected stomach mucous by Helicobacter pylori | 0 | 22 | 0 | 30 |