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Firat, B. T.; Gulen, M.; Satar, S.; Firat, A.; Acehan, S.; Isikber, C.; Kaya, A.; Sahin, G. K.; Akoglu, H. Perfusion Index: Could This Be a New Triage Tool for Upper Gastrointestinal System Bleeding in the Emergency Department? A Prospective Cohort Study. Sao Paulo Med J 2021, 139, 583-590.