TY  - BOOK
AU  - Berk,J.Edward
AU  - Haubrich,William S.
TI  - Gastrointestinal symptoms: clinical interpretation 
SN  - 1556641966
PY  - 1991///
CY  - Philadelphia
PB  - B. C. Decker
KW  - Gastrointestinal diseases
KW  - Diagnosis
ER  -