TY - Chinese Journal of Child Health Care A1 - DENG Sha-sha, YE Kan, LU Xiao-ting, YAN Bo-qiu, KONG Rui T1 - Analysis of factors affecting ultrasound bone mineral density in premature infants with gestational age less than 34 weeks Y1 - 2022-02-10 JF - Chinese Journal of Child Health Care JO - Chinese Journal of Child Health Care SP - 189 EP - 193 VL - 30 IS - 2 UR - https://manu41.magtech.com.cn/Jwk_zgetbjzz N1 - 10.11852/zgetbjzz2021-0244 ER -