TY - GEN AU - Hallenbeck,G A TI - The natural history of duodenal ulcer disease SN - 0039-6109 PY - 1977///0129 KW - Adult KW - Aged KW - Duodenal Ulcer KW - complications KW - England KW - Female KW - Humans KW - Male KW - Middle Aged KW - Peptic Ulcer Hemorrhage KW - Peptic Ulcer Perforation KW - Pyloric Stenosis KW - etiology KW - United States N1 - Publication Type: Journal Article ER -