7YANG RJ, SHEU JJ,CHEN HS,et al. Morbidity at elementary school entry differs by sex and level of residence urbanization : A comparative cross-sectional study[J]. BNC Public Health, 2007,7:358-366.
8ROSE KA, MORGAN IG, SMITH W,et al. Myopia, lifestyle, and schooling in students of Chinese ethnicity in Singapore and Sydney [J]. Arch Ophthalmol, 2008,126(4) :527-530.
10JONES LA, S1NNOTT LT, MUTrI DO, et al. Parental history of myo- pia, sports and outdoor activities, and future myopia [ J ]. Invest Oph- thalmol Vis Sci,2007, 48(8) :3524-3532.