1. Department of Clinical Laboratory
2. Gaochun People's Hospital
3. Nanjing 211300
4. P. R. China
5. Women's Hospital of Nanjing Medical University
6. Nanjing Maternity and Child Health Care Hospital
7. Nanjing 210004
8. PR China
9. The Second Hospital of Nanjing
10. Nanjing University of Chinese Medicine
11. Nanjing 210003