Correlation studyon vitamins A, D, E levels with recurrent respiratory tract infections in children
ZHEN Hong, DAI Yi, DU Wu-jie, DENG Yin-ye, LI Liu-qing, WEN Zhi-hong
journal1 . 2018, (12): 1384 -1386 .  DOI: 10.11852/zgetbjzz2018-0140