Construction and validation of novel nomograms based on the log odds of positive lymph nodes to predict the prognosis of papillary thyroid cancer: a retrospective cohort study - Jing, Saisai; Song, Jiazhao; Di, Yupeng; Xiao, Jiajia; Ma, Jianke; Wu, Zimiao (Frontiers in Endocrinology, 2025)