1. Department of Oncology, Weifang People's Hospital, Weifang, Shandong 261000, P.R. China
2. Department of Gynecology, Weifang People's Hospital, Weifang, Shandong 261000, P.R. China
3. Department of Traditional Chinese Medicine, Weifang People's Hospital, Weifang, Shandong 261000, P.R. China
4. Department of Respiratory Medicine, Weifang People's Hospital, Weifang, Shandong 261000, P.R. China