TY - Chinese Journal of Child Health Care A1 - LUO Bei, ZHANG Xue-feng T1 - Study on the umbilical cord milking during delivery of premature infants born at less than 34 weeks of gestation Y1 - 2022-06-10 JF - Chinese Journal of Child Health Care JO - Chinese Journal of Child Health Care SP - 680 EP - 684 VL - 30 IS - 6 UR - https://manu41.magtech.com.cn/Jwk_zgetbjzz N1 - 10.11852/zgetbjzz2021-0819 ER -