Wei Xin, Li Shuangjiang, Cheng Shan, Qiu Li, Che Guowei
Department of Ultrasound, West China Hospital, Sichuan University, Chengdu 610041, China.
Department of Ultrasound, Deyang People's Hospital, Deyang 618000, China.
J Thorac Dis. 2019 May;11(Suppl 9):S1246-S1249. doi: 10.21037/jtd.2019.02.56.