Comparison of peroral versus ultrathin transnasal endoscopy in the diagnosis of upper gastrointestinal pathology.
Al-Karawi
M A
MA
Department of Gastroenterology, Riyadh Armed Forces Hospital, Riyadh, Saudi Arabia.
Sanai
F M
FM
Al-Madani
A
A
Kfoury
H
H
Yasawy
M I
MI
Sandokji
A
A