6American Thyroid Association (ATA) Guidelines Taskforce on Thyroid Nodules and Differentiated Thyroid Cancer, Cooper DS,Doherty GM, et al. Revised American Thyroid Association management guidelines for patients with thyroid nodules and differentiated thyroid eaneer[J]. Thyroid,2009,19(11) :1167-1214.
7Schonfeld SJ, Lee C, Berrington de Gonz61ez A. Medical exposure to radiation and thyroid cancer[ J]. Clin oncol( R Coll Radiol) ,2011,23 (4) :244-250.