Kitti Larpsombatsiri และ Robert Sedgwick Chapman. (2008) Factors relating to urinary iodine concentration of pregnant women in Thailand. Chulalongkorn University:ม.ป.ท.Kitti Larpsombatsiri และ Robert Sedgwick Chapman. 2008. Factors relating to urinary iodine concentration of pregnant women in Thailand. ม.ป.ท.:Chulalongkorn University;Kitti Larpsombatsiri และ Robert Sedgwick Chapman. Factors relating to urinary iodine concentration of pregnant women in Thailand. ม.ป.ท.:Chulalongkorn University, 2008. Print.