TY  - BOOK
AU  - Silverstein, F E
AU  - Tytgat, G N J
TI  - Gastrointestinal endoscopy
SN  - 0723421951
PY  - 1997///
PB  - Wolfe
KW  - Gastrointestinal system
KW  - Endoscopy
KW  - Diagnosis
KW  - Gastrointestinal diseases
ER  -