The Sydney System: endoscopic division. Endoscopic appearances in gastritis/duodenitis.
Tytgat
G N
GN
Department of Gastroenterology, Academic Medical Centre, Amsterdam, The Netherlands.
D004382:Duodenitis / Q000145:classification / Q000473:pathology*; D005756:Gastritis / Q000145:classification / Q000473:pathology*; D005773:Gastroscopy; D006801:Humans; D008722:Methods