DOI: 10.1055/s-00000094

Zeitschrift für Gastroenterologie

References

Braden B, Duan LP, Caspary WF. et al.
Endoscopy is not a risk factor for Helicobacter pylori infection– but medical practice is. 
Gastrointest Endosc 1997; 46 (4): 305-310  

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