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