Gastrointestinal Endoscopy
Gastrointestinal Endoscopy > 2007 > 66 > 4 > 831-835
Gastrointestinal Endoscopy > 2007 > 66 > 4 > 809-813
Gastrointestinal Endoscopy > 2007 > 66 > 4 > 814-819
Gastrointestinal Endoscopy > 2007 > 66 > 4 > 720-726
Gastrointestinal Endoscopy > 2007 > 66 > 4 > 679-692