[1]Department of Obstetrics and Gynecology;
Wuhan Red Cross Hospital(Wuhan 11th Hospital)in Hubei Province;
Wuhan City;
Hubei Province;
430015;
[2]Department of Obstetrics and Gynecology;
Wuhan Women and Children''s Health Care Center in Hubei Province;
Wuhan City;
Hubei Province;
430015;
[3]Branch of Allergic Reactions;
Tongji Hospital in Wuhan Hubei Province;
Wuhan City;
Hubei Province;
430030;
Hypertensive disorder complicating pregnancy; Folic acid; Vitamin; Endothelial injury; Apoptosis;