2Anderson BD,Turchen SG,Manoguerra AS,et al.Retrospective analysis of ingestions of iron containing products in the unitedstates: are there difference between chewable vitamins and adult preparations[J]? J Emerg Med,2000,19(3): 255-258.
3Morris CC.Pediatric iron poisonings in the United States[J].South Med J,2000,93(4) :353-358.