Using Exosome and Next Generation Sequencing to Help the Diagnosis of Thyroid Nodules Which Are Undiagnosable by the Fine Needle Aspiration Cytology Examination = 以外泌體(exosome)與次世代定序協助診斷甲狀腺細針穿刺細胞學檢查無法確診的甲狀腺腫瘤