Stress ulceration.
D002927:Cimetidine / Q000627:therapeutic use*; D006801:Humans; D008606:Mental Processes / Q000187:drug effects*; D010437:Peptic Ulcer / Q000517:prevention & control*; D011899:Ranitidine / Q000627:therapeutic use; D013312:Stress, Physiological
D002927:Cimetidine; D011899:Ranitidine