Patients who test Helicobacter pylori positive, are treated with antibiotics. However, due to
a number of factors (such as unknown treatment compliance, no standardized follow-up, ...), a
relative low eradication-percentage was reported.
Therefore, the investigators want to measure the anticipated improvement in
eradication-percentage due to the standardized treatment schedules (1st line, 2nd line and
further) and the optimized communication with the general practitioner and patients.