DOI:
10.1055/s-00000133
Gastroenterologie up2date
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References
Preiss C, Charton JP, Schumacher B. et al
A randomized trial of unsedated transnasal small-caliber esophagogastroduodenoscopy (EGD) versus peroral small-caliber EGD versus conventional EGD.
Endoscopy 2003; 35: 641-646
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