Development and validation of an ultrasound-based nomogram for preoperative prediction of cervical central lymph node metastasis in papillary thyroid carcinoma

Chunwang Huang, Shuzhen Cong, Ting Liang, Zhanwu Feng, Kehong Gan, Ruili Zhou, Yuping Guo, Siwei Luo, Kunming Liang, Quanshi Wang