Clinical analysis of penetrating keratoplasty for the children under 12 years old 
ZHANG Ying-nan, LIANG Qing-feng, LIU Yang, MIAO Sen, ZHANG Jing, WANG Li,PAN Zhi-qiang.
Ophthalmology in China . 2017, (4): 262 -266 .  DOI: 10.13281/j.cnki.issn.1004-4469.2017.04.011