TY  - RPRT
TI  - Rolling review: upper gastrointestinal bleeding.
AU  - L Laine
PY  - 1993
DO  - 10.1111/j.1365-2036.1993.tb00092.x
UR  - https://pubmed.ncbi.nlm.nih.gov/8485275/
ID  - 8485275
ER  -