@article{ CHEN Yan-hua_605, author = {[ CHEN Yan-hua, HU Ji, LIU Yin-yue, WANG Fei, YANG Yi-de, YUAN Shu-qian, ZENG Yuan, ZHENG Chan-juan, XIE Ming]}, title = {Interaction between outdoor physical activity and taking extra-curricular cultural classes before school age on poor vision of primary and middle school students}, publisher = {Chinese Journal of Child Health Care}, year = {2021}, journal = {Chinese Journal of Child Health Care}, volume = {29}, number = {6}, eid = {605}, pages = {605-608}, keywords = {poor vision;outdoor activities;extra-curricular cultural courses;interaction}, doi = https://manu41.magtech.com.cn/Jwk_zgetbjzz/EN/10.11852/zgetbjzz2020-2080 }