The underweight child.
D000342:Affective Symptoms / Q000150:complications; D001835:Body Weight; D002648:Child; D002664:Child Nutritional Physiological Phenomena; D002675:Child, Preschool; D004065:Digestive System Abnormalities; D004641:Emigration and Immigration; D004700:Endocrine System Diseases / Q000150:complications; D006801:Humans; D007223:Infant; D007228:Infant Nutrition Disorders / Q000209:etiology*; D008286:Malabsorption Syndromes / Q000150:complications; D008661:Metabolism, Inborn Errors / Q000150:complications; D013851:Thinness