Establishment and Validation of an Integrated Model to Predict Postoperative Recurrence in Patients With Atypical Meningioma Autor Xiao-Yong Chen, Jin-Yuan Chen, Yin-Xing Huang, Jia-Heng Xu, Wei-Wei Sun, Yue- Chen, Chen-Yu Ding, Chen-Yu Ding, Shuo-Bin Wang, Xi-Yue Wu, De-Zhi Kang, De-Zhi Kang, De-Zhi Kang, Hong-Hai You, Yuan-Xiang Lin