It is possible that young children who attended day care centers and primary schools received lunch and milk programs which used or contained iodized salt. Furthermore, iodization of drinking water in these schools in some areas may have provided higher amounts of iodine to young children.
ดูแลและเลี้ยงเด็กเล็กเฉพาะตอนกลางวัน (day care centers)และ