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Danış, N.; Tekin, F.; Akarca, U. S.; Gülsen Ünal, N.; Işık Erdoğan, E.; Akat, K.; Demirkoparan, Ümit; Karasu, Z.; Turan, İlker; Oruç, N. Changing Patterns of Upper Gastrointestinal Bleeding over 23 Years in Turkey. Turkish Journal of Gastroenterology 2019, 30, 877-882.