1. Department of Vascular Surgery, The People' Hospital of Weifang City, Weifang, Shandong 261000, P.R. China
2. Department of Obstetrics and Gynecology, Weifang Hospital of Traditional Chinese Medicine, Weifang, Shandong 261041, P.R. China
3. Department of Pharmacy, Weifang Hospital of Traditional Chinese Medicine, Weifang, Shandong 261041, P.R. China