title: Duodenal ulcer in persons occupationally exposed to microwave radiation.
mesh_terms: D000328:Adult; D000367:Age Factors; D004381:Duodenal Ulcer / Q000209:etiology* / Q000503:physiopathology; D004781:Environmental Exposure; D005750:Gastric Juice / Q000378:metabolism; D006801:Humans; D008872:Microwaves / Q000009:adverse effects*; D008875:Middle Aged; D009784:Occupational Diseases / Q000209:etiology*; D013997:Time Factors