1. Inner Mongolia University for Nationlities, Tongliao, Inner Mongolia Autonomous Region, P. R. China
2. Inner Mongolia Key Laboratory of Mongolian Medicine Pharmacology for Cardio-Cerebral Vascular System, Tongliao, Inner Mongolia Autonomous Region, P. R. China
3. The First Affiliated Hospital of Inner Mongolia University for Nationalities, Institute of Mongolia and Western Medicinal Treatment, Tongliao, Inner Mongolia Autonomous Region, P. R. China
4. Department of Gynaecology, Fujian Medical University, Fuzhou, Fujian, P. R. China