4Chan Ty,Critchley JA.The spectrum of poisonings in Hong Kong:on overview.Vet Hum Toxicol,1994,36:135.
5Litovitz TI,Clark LR,Soloway RA,et al.1993 Annual report of the American Association of Poison Control Centers toxic exposure surveillance system.Am J Em Med,1994,12:546.
6koyama k.Japan National Poison Center:1994 annual report.Tpn J Toxicol,1995,8:303.
7McCaig.Poisoning-related visits to emergency departments in the United States.1993～1996.J Toxicol Clin Toxicol,1999,7:817.
8Litovitz TL,Clark LR,Soloway RA,et al.1993 Annual report of the Am erican Association of Poison Control Centers toxic exposure surveillance system. Am J Em Med,1994,12:546.
9Koyama K.Japan National Poison Center:1994 annual report.Jpn J Toxicol,199 5,8:303.
10Hanssens,et al.Etiologic and demographic characteristics of poisoning: a p rospective hospital-based study in Oman. J-Toxicol-Chin-Toxicol,2001,4:371～ 380.
