TY  - RPRT
TI  - Nonvariceal upper gastrointestinal bleeding.
AU  - Christopher S Huang
AU  - David R Lichtenstein
PY  - 2003
DO  - 10.1016/s0889-8553(03)00092-x
UR  - https://pubmed.ncbi.nlm.nih.gov/14696297/
ID  - 14696297
ER  -