1. Department of Respiratory Medicine , Huangyan Hospital Affiliated to Wenzhou Medical University , Taizhou , P.R. China
2. Institute of Health Education, Hangzhou Center for Disease Control and Prevention , Hangzhou , P.R. China
3. Zhejiang University of Chinese Medicine , Hangzhou , P.R. China
4. Scientific Research Department , Zhejiang Shengting Medical Company , Hangzhou , P.R. China
5. Institute of Health and Medical Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences , Hefei , P.R. China
6. Anhui Province Key Laboratory of Medical Physics and Technology, Institute of Health and Medical Technology, Hefei Institutes of Physical Science, Chinese Academy of Science , Hefei , P.R. China
7. Department of Gynaecology, Hangzhou Obstetrics and Gynecology Hospital , Hangzhou , P.R. China