DOI: 10.1055/s-00000094

Zeitschrift für Gastroenterologie

References

Classen M.
Two Centuries of Digestive Tract Endoscopy: A concise Report.

In: Classen M, Tytgat GNJ, Lightdale CJ.
Gastroentorology Endoscopy.
Thieme Verlag; 2010: 2-13

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