[1] Zhejiang Univ, Womens Hosp, Sch Med, Dept NICU, Hangzhou, Zhejiang, Peoples R China
[2] Zhejiang Univ, Jilin Hosp Womens Hosp, Sch Med, Changchun, Jilin, Peoples R China
[3] Zhejiang Univ, Womens Hosp, Sch Med, Dept Nursing, Hangzhou, Zhejiang, Peoples R China
[4] Zhejiang Univ, Womens Hosp, Sch Med, Dept Obstet, Hangzhou, Zhejiang, Peoples R China
[5] Zhejiang Univ, Womens Hosp, Sch Med, 1 Xueshi Rd, Hangzhou 310006, Zhejiang, Peoples R China