4WHO/UNICEF/ICCIDD.Assessment of the iodine deficiency disorders and monitoring their elimination:Aguide for programme manager[R].Second edition.Geneva:WHO/NHD/01.1.2001.
5WHO/ UNICEF / ICCIDD.Recommended iodine levels in salt and guidelines for monitoring their adequacy and effectiveness[R].Geneva:Nutrition Unit,World Health Organization,1996,13.
6Doun JT,Semigan M J,Delange F.The prevention and management of lodine -lnduced hyperthyroidism and its cardiac features[J].Thyroid,1998,8(1):101.