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(2008) Clinical characteristics of 852 patients with subacute thyroiditis before treatment. Intern Med 47: 725\u2013729.","DOI":"10.2169\/internalmedicine.47.0740"},{"key":"2","doi-asserted-by":"crossref","unstructured":"2 Benbassat CA, Olchovsky D, Tsvetov G, Shimon I (2007) Subacute thyroiditis: clinical characteristics and treatment outcome in fifty-six consecutive patients diagnosed between 1999 and 2005. J Endocrinol Invest 30: 631\u2013635.","DOI":"10.1007\/BF03347442"},{"key":"3","doi-asserted-by":"crossref","unstructured":"3 Nishihara E, Amino N, Kudo T, Kohsaka K, Ito M, et al. (2019) Moderate frequency of anti-thyroglobulin antibodies in the early phase of subacute thyroiditis. Eur Thyroid J 8: 268\u2013272.","DOI":"10.1159\/000501033"},{"key":"4","doi-asserted-by":"crossref","unstructured":"4 Nishihara E, Amino N, Ohye H, Ota H, Ito M, et al. (2009) Extent of hypoechogenic area in the thyroid is related with thyroid dysfunction after subacute thyroiditis. 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J Clin Endocrinol Metab 88: 2100\u20132105.","DOI":"10.1210\/jc.2002-021799"},{"key":"11","doi-asserted-by":"crossref","unstructured":"11 Lam KY, Lo CY (2002) Papillary carcinoma with subacute thyroiditis. Endocr Pathol 13: 263\u2013265.","DOI":"10.1007\/s12022-002-0003-x"},{"key":"12","doi-asserted-by":"crossref","unstructured":"12 Ucan B, Delibasi T, Cakal E, Arslan MS, Bozkurt NC, et al. (2014) Papillary thyroid cancer case masked by subacute thyroiditis. Arq Bras Endocrinol Metabol 58: 851\u2013854.","DOI":"10.1590\/0004-2730000003222"},{"key":"13","doi-asserted-by":"crossref","unstructured":"13 Park HK, Kim DW, Lee YJ, Ha TK, Kim DH, et al. (2015) Suspicious sonographic and cytological findings in patients with subacute thyroiditis: two case reports. 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Thyroid 18: 1221\u20131225.","DOI":"10.1089\/thy.2008.0096"},{"key":"17","unstructured":"17 Japan Thyroid Association Guidelines for the diagnosis of thyroid disease. available at: www.japanthyroid.jp\/doctor\/guideline\/english.html"},{"key":"18","doi-asserted-by":"crossref","unstructured":"18 Ohye H, Nishihara E, Sasaki I, Kubota S, Fukata S, et al. (2006) Four cases of Graves\u2019 disease which developed after painful Hashimoto\u2019s thyroiditis. Intern Med 45: 385\u2013389.","DOI":"10.2169\/internalmedicine.45.1506"},{"key":"19","doi-asserted-by":"crossref","unstructured":"19 Kon YC, DeGroot LJ (2003) Painful Hashimoto\u2019s thyroiditis as an indication for thyroidectomy: clinical characteristics and outcome in seven patients. J Clin Endocrinol Metab 88: 2667\u20132672.","DOI":"10.1210\/jc.2002-021498"},{"key":"20","doi-asserted-by":"publisher","unstructured":"20 Ito Y, Amino N, Yokozawa T, Ota H, Ohshita M, et al. (2007) Ultrasonographic evaluation of thyroid nodules in 900 patients: comparison among ultrasonographic, cytological, and histological findings. Thyroid 17: 1269\u20131276.","DOI":"10.1089\/thy.2007.0014"},{"key":"21","unstructured":"21 Takebe K, Date M, Yamamoto Y (1994) Mass screeening for thyroid cancer with ultrasonography. KARKINOS 7: 309\u2013317 (In Japanese)."},{"key":"22","unstructured":"22 Howlader N, Noone A, Krapcho M, Miller D, Brest A, et al. Thyroid cancer. SEER cancer statistics review, 1975\u20132016, National Cancer Institute Bethesda, MD. 2019; Available at https:\/\/seer.cancer.gov\/csr\/1975_2016\/results_merged\/sect_26_thyroid.pdf"},{"key":"23","doi-asserted-by":"crossref","unstructured":"23 Kobayashi K, Fujimoto T, Ota H, Hirokawa M, Yabuta T, et al. (2018) Calcifications in thyroid tumors on ultrasonography: calcification types and relationship with histopathological type. 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