lncRNA IGF2‐AS regulates miR‐500a‐3p/PPP4R1/p‐VEGFR2 signalling pathway to promote thyroid carcinoma progression and tubulogenesis oleh Yuan Xiang, Qi‐Bei Zong, Hui Liu, Han‐Ning Li, Qi‐Fang Wu, Zhou‐Tong Dai, You Huang, Chao Shen, Le‐Wei Li, Xing‐Rui Li, Xing‐Hua Liao