TY - Chinese Journal of Child Health Care A1 - ZHANG Yao-yun, LIU Ju-fen T1 - Effect of folic acid supplementation during pregnancy on childhood asthma and allergic diseases Y1 - 2021-08-10 JF - Chinese Journal of Child Health Care JO - Chinese Journal of Child Health Care SP - 861 EP - 864 VL - 29 IS - 8 UR - https://manu41.magtech.com.cn/Jwk_zgetbjzz N1 - 10.11852/zgetbjzz2020-0512 ER -