The Veterans Administration cooperative study on gastric ulcer: healing, recurrence, cancer.
D002908:Chronic Disease; D006801:Humans; D011446:Prospective Studies; D012008:Recurrence; D013274:Stomach Neoplasms / Q000453:epidemiology; D013276:Stomach Ulcer / Q000150:complications / Q000628:therapy*; D014481:United States; D014493:United States Department of Veterans Affairs