Esophageal perforations secondary to endoscopic procededures (report of three cases) - TEZEL, Ahmet; ŞAHİN, Tülin; KOŞAR, Yasemin; OĞUZ, Dilek; ARDA, Kemal; ŞAHİN, Burhan; CUMHUR, Turhan (Turkish Journal of Gastroenterology, 1997)