TY  - BOOK
AU  - Tytgat, Guido N. J
AU  - Tytgat, Stefaan H. A. J
TI  - Grading and staging in gastroenterology
SN  - 9783131426918
U1  - 616.3 TYT 
PY  - 2008///
CY  - New York
PB  - Thieme
KW  - Gastrointestinal system--Diseases
N1  - includes index
ER  -