[Recurrence of peptic ulcer].
D000328:Adult; D004381:Duodenal Ulcer / Q000209:etiology; D005260:Female; D005744:Gastric Acid / Q000378:metabolism; D005753:Gastric Mucosa / Q000098:blood supply / Q000378:metabolism; D006801:Humans; D008297:Male; D008875:Middle Aged; D010437:Peptic Ulcer / Q000209:etiology*; D012008:Recurrence; D013276:Stomach Ulcer / Q000209:etiology