Thyroid Nodule with Benign Cytology: Is Clinical Follow-Up Enough? - Choi, Yoon Jung; Jung, Inkyung; Min, Sung Ji; Kim, Hye Jung; Kim, Ji-hoon; Kim, Soojin; Park, Jeong Seon; Shin, Jung Hee; Sohn, Yu-Mee; Yoon, Jung Hyun; Kwak, Jin Young (PLoS ONE, 2013)