TY  - GEN
AU  - Patterson,M
TI  - Upper gastrointestinal bleeding
SN  - 0026-6396
PY  - 1975///0108
KW  - Acute Disease
KW  - Fiber Optic Technology
KW  - Gastrointestinal Hemorrhage
KW  - diagnosis
KW  - Gastroscopy
KW  - Humans
N1  - Publication Type: Journal Article
ER  -