Ning-Pu Liu. Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, No.1 Dong Jiao Min Xiang, Beijing 100730, China. nliu001@yeah.net
Yun-Yun Li, Ya-Jie Yu, Xi-Pu Liu, et al. Visual impairment with possible macular changes after a high dose of sildenafil in a healthy young woman. Int J Ophthalmol, 2018,11(2):340-342
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