Corneal Q value and its ralated factors in Chinese older than 30 years
XIONG Ying, WAN Xiu-hua, LI Jing, WANG Ning-li, LIU Xue, WANG Zhao
Ophthalmology in China . 2015, (6): 393 -396 .  DOI: 10.13281/j.cnki.issn.1004-4469.2015.06.011