Longitudinal study of ocular biometry parameters in schoolchildren: two years follow-up 
GUO Yin1, TANG Ping1, LIU Li-juan2, XU Liang2, LV Yan-yun1, FENG Yi1, MENG Meng1.
Ophthalmology in China . 2015, (1): 19 -25 .  DOI: 10.13281/j.cnki.issn.1004-4469.2015.01.007