A multicenter clinical study on parent-implemented early intervention for children with global developmental delay oleh Ping Dong, Qiong Xu, Ying Zhang, Dong-yun Li, Bing-rui Zhou, Chun-chun Hu, Chun-xue Liu, Xin-rui Tang, Shi-yun Fu, Lan Zhang, Hai-feng Li, Fei-yong Jia, Xiu-bin Tong, Jie Wang, Hui-ping Li, Xiu Xu