@misc{indiciae2c71f636987d, title = {[Upper gastrointestinal bleeding in the elderly].}, author = {K Nishida and I Nojiri and M Kato and M Higashijima and K Takagi and R Akashi}, year = {1992}, doi = {10.3143/geriatrics.29.829}, url = {https://pubmed.ncbi.nlm.nih.gov/1491478/}, note = {Source identifier: 1491478} }