DOI: 10.1055/s-00000012

Endoscopy

References

Dumortier J, Ponchon T, Scoazec JY. et al.
Prospective evaluation of transnasal esophagogastroduodenoscopy: feasibility and study on performance and tolerance. 
Gastrointest Endosc 1999; 49: 285-291  

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