Orhan SEZGİN, Engin ALTINTAŞ and Anıl TOMBAK (2019) “Effects of seasonal variations on acute upper gastrointestinal bleeding and its etiology”, Turkish Journal of Gastroenterology, 18(3), pp. 172–176. Available at: https://turkjgastroenterol.avesjournals.com/index.php/tjg/article/view/2120 (Accessed: 12 July 2025).