Recurrent abdominal pain and dietary fiber.
D000005:Abdomen; D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D004043:Dietary Fiber / Q000627:therapeutic use*; D004311:Double-Blind Method; D006801:Humans; D010146:Pain / Q000178:diet therapy*; D011897:Random Allocation