Letter: Stool characteistics and western diseases.
D001064:Appendicitis / Q000209:etiology; D004032:Diet; D005243:Feces / Q000032:analysis; D005769:Gastrointestinal Motility; D006801:Humans; D007414:Intestinal Neoplasms / Q000209:etiology; D008296:Malaysia; D012424:Rural Population; D012923:Social Class; D014505:Urban Population