1. Graduate School, Hebei University of Chinese Medicine, Shijiazhuang, Hebei, China
2. Hebei Provincial Hospital of Chinese Medicine, Shijiazhuang, Hebei, China
3. Shijiazhuang Obstetrics and Gynecology Hospital, Shijiazhuang, Hebei, China
4. Helmholtz-Zentrum Hereon, Institute of Active Polymers, Teltow, Germany
5. Institute of Chemistry and Biochemistry, Freie Universität Berlin, Berlin, Germany
6. Deutsches Herzzentrum Berlin, Berlin, Germany
7. Department of Plastic, Hand and Reconstructive Surgery, University Hospital Regensburg, Regensburg, Germany