title: The Veterans Administration Cooperative Study on Gastric Ulcer. 4. The follow-up period.
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D044383:Black People; D004381:Duodenal Ulcer / Q000150:complications / Q000473:pathology; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography; D013276:Stomach Ulcer / Q000150:complications / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery / Q000628:therapy; D013997:Time Factors; D014481:United States; D014945:Wound Healing; D001741:Black or African American