Additional references

1. http://www.webmd.com/women/radioactive-iodine

2. http://www.cancerresearchuk.org/cancer-help/type/thyroid-      
    cancer/treatment/radiotherapy/radioactive-iodine-treatment-for-thyroid-cancer

3. http://www.ehow.com/way_5217251_radiation-iodine-treatment.html

4. http://www.radiologyinfo.org/en/info.cfm?PG=radioiodine#part_two

5. http://www.cancer.org/cancer/thyroidcancer/overviewguide/thyroid-cancer-overview-treating-
    radioactive-iodine