ALB and Abnormal bleeding: 30 Bae Bae SJ SJ Kim Kim K K Yun Yun SJ SJ Lee Lee SH SH Predictive Performance of Blood Urea Nitrogen to Serum Albumin Ratio in Elderly Patients with Gastrointestinal Bleeding Predictive Performance of Blood Urea Nitrogen to Serum Albumin Ratio in Elderly Patients with Gastrointestinal Bleeding Am J Emerg Med Am J Emerg Med 2021 2021 41 41 152 152 157 157 10.1016/j.ajem.2020.12.022 10.1016/j.ajem.2020.12.022 33465709 33465709