Unsuspected giardiasis as a cause of malnutrition and diarrhoea in the elderly.
D000368:Aged; D003967:Diarrhea / Q000209:etiology*; D005260:Female; D005873:Giardiasis / Q000150:complications*; D006801:Humans; D008297:Male; D009748:Nutrition Disorders / Q000209:etiology*