Li Yun-Yun, Yu Ya-Jie, Liu Xi-Pu, Liu Ning-Pu
Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China.
Sekwa Institute of Medicine, Beijing 100035, China.
Int J Ophthalmol. 2018 Feb 18;11(2):340-342. doi: 10.18240/ijo.2018.02.27. eCollection 2018.