[Gastric and duodenal peptic ulcer in the elderly].
D000368:Aged; D005753:Gastric Mucosa / Q000378:metabolism; D006801:Humans; D008875:Middle Aged; D010146:Pain / Q000175:diagnosis; D010437:Peptic Ulcer / Q000150:complications / Q000175:diagnosis*; D012621:Seasons
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