[1]Department of Clinical Laboratory Medicine;
the Second People''s Hospital of Xining City Qinghai Province;
Xining City;
Qinghai Province;
810003;
[2]Department of Obstetrics;
the Second People''s Hospital of Xining City Qinghai Province;
Xining City;
Qinghai Province;
810003;
[3]Department of Clinical Laboratory Medicine;
the Fourth People''s Hospital of Qinghai Province;
Xining City;
Qinghai Province;
810003;
Preeclampsia; Vitamin E; Oxidative stress; Cell apoptosis;