1 Institute of Biomedical Informatics, Bioinformatics Center, Laboratory for Nanomedicine, School of Basic Medical Sciences, Henan University, Kaifeng 475004, China.
2 Department of Dermatology, Second People's Hospital of Zhengzhou, Zhengzhou 450006, China.
3 Kaifeng Food and Drug Inspection Institute, Kaifeng 475004, China.