1. Department of Pharmaceutical Engineering
2. College of Life Science & Biotechnology
3. Heilongjiang Bayi Agricultural University
4. P. R. China
5. Department of gynaecology and obstetrics
6. Daqing Oilfield Hospital
7. Daqing 163311
8. P. R China
9. Department of physical education
10. Hebei Normal University of Science and Technology
11. Qinhuangdao 066004