Endoscopy, Table of Contents Endoscopy 1991; 23(2): 108-109DOI: 10.1055/s-2007-1010631 Letters to the Editor© Georg Thieme Verlag KG Stuttgart · New YorkEndoscopy 22 (1990) 285-286Olaf Friedrichs St. Barbara-Hospital, W-4100 Duisburg (Hamborn) Recommend Article Abstract PDF Download Buy Article See also:Reply to the Letter by O. FriedrichsEndoscopy 1991; 23(02): 109-109DOI: 10.1055/s-2007-1010632See also:Extensive Necrosis of Gastric Mucosa Following Injection Therapy of Bleeding Peptic UlcerEndoscopy 1990; 22(06): 285-286DOI: 10.1055/s-2007-1010728See also:Epinephrine: Which Solution?Endoscopy 1991; 23(06): 351-351DOI: 10.1055/s-2007-1010716 See also Extensive Necrosis of Gastric Mucosa Following Injection Therapy of Bleeding Peptic Ulcer PDF (108 kb)