TY  - GEN
AU  - Yang,Puyu
AU  - Kang,Huixian
AU  - Ma,Caihong
AU  - Wei,Yuan
AU  - Tao,Liyuan
AU  - Wu,Zhangxin
TI  - Risk of preterm delivery in singletons conceived by 
SN  - 1473-0766
PY  - 2020///0121
KW  - Adult
KW  - Case-Control Studies
KW  - Female
KW  - Fertilization in Vitro
KW  - adverse effects
KW  - Gestational Age
KW  - Humans
KW  - Infant, Newborn
KW  - Infertility, Female
KW  - diagnosis
KW  - Parity
KW  - Pregnancy
KW  - Pregnancy Outcome
KW  - epidemiology
KW  - Premature Birth
KW  - Retrospective Studies
KW  - Risk Factors
KW  - Single Embryo Transfer
KW  - statistics & numerical data
N1  - Publication Type: Journal Article
UR  - https://doi.org/10.1080/09513590.2018.1525702
ER  -