TY - GEN AU - Straumann,A AU - Gyr,K AU - Stalder,G A TI - [Acute upper gastrointestinal bleeding: primary diagnostic and therapeutic measures] SN - 0040-5930 PY - 1983///0923 KW - Acute Disease KW - Gastrointestinal Hemorrhage KW - diagnosis KW - Humans N1 - Publication Type: English Abstract; Journal Article ER -