Review of 502 patients with upper gastrointestinal bleeding - GÜNŞAR, Fulya; AKARCA, Ulus Salih; YÖNETÇİ, Nadir and ÖZÜTEMİZ, Ömer and AYDIN, Ahmet and ERSÖZ, Galip and BOR, Serhat and MUSAOĞLU, Ahmet and ÇAVUŞOĞLU, Hanefi and BATUR, Yücel (Turkish Journal of Gastroenterology, 1997)