Chinese Journal of Practical gynecology ang obstetric
Potential effects of abnormal placental location on gestational hypertension-preeclampsia.
DONG Yi-nuo，LU Yi，QUAN Si-jie，YING Hao.
Acta Metallurgica Sinica . 2014, (12): 941 -944 .  DOI: 10.7504/fk2014110110