@misc{indiciae9d424e51f1de, title = {Nonvariceal upper gastrointestinal bleeding.}, author = {P K Gupta and D E Fleischer}, year = {1993}, doi = {10.1016/s0025-7125(16)30206-1}, url = {https://pubmed.ncbi.nlm.nih.gov/8371624/}, note = {Source identifier: 8371624} }