Correspondence
Shuai Han, Handan Key Laboratory of Novel Nanobiomaterials, College of
Materials Science and Engineering, Hebei University of Engineering,
Handan, P. R. China.
Email: hanshuai@hebeu.edu.cn,
Zhongchao
Huo,
Oncology Department No.1,
Affiliated Hospital of Hebei University of Engineering, Handan, P. R.
China.
Email: huozhch@163.com