@article{FANG Cai-wen_673, author = {[FANG Cai-wen, LIU Zhi-ying, XU Hong, XU Mei-ying, XU Xiao-juan, ZOU Xu-feng]}, title = {Analysis of the risk factors for recurrent respiratory tract infection in preschool children and the correlation with vitamin D(VitD)}, publisher = {Chinese Journal of Child Health Care}, year = {2019}, journal = {Chinese Journal of Child Health Care}, volume = {27}, number = {6}, eid = {673}, pages = {673-675}, keywords = {recurrent respiratory tract infection;risk factors;children;immunization}, doi = https://manu41.magtech.com.cn/Jwk_zgetbjzz/EN/10.11852/zgetbjzz2018-0712 }