Predicting Adverse Outcomes in Upper Gastrointestinal Bleeding: A Focus on Blood Urea Nitrogen‐Based Ratios and Age‐Adjusted Shock Index. - Cakiroglu, Omer Faruk; Gurbuz, Julide; Arac, Bilal; Ersoz, Yilmaz; Taslidere, Bahadir; Cander, Basar; Kaushik, Shashank (Emergency Medicine International, 2026)