title: [Present situation and task of obstetrics].
authors.forename: Zhong-ying
authors.initials: ZY
authors.lastname: Dai
authors.forename: Yue
authors.initials: Y
authors.lastname: Dong
authors.forename: Tao
authors.initials: T
authors.lastname: Duan
mesh_terms: D000013:Congenital Abnormalities / Q000517:prevention & control; D005260:Female; D006801:Humans; D008428:Maternal Mortality; D009774:Obstetrics; D011247:Pregnancy