Hookworm infestation as a cause of chronic abdominal pain in young Singapore males.
D000005:Abdomen; D000293:Adolescent; D000328:Adult; D006725:Hookworm Infections / Q000150:complications* / Q000175:diagnosis; D006801:Humans; D008297:Male; D010146:Pain / Q000209:etiology*; D012846:Singapore