1. Clinical Research Center, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, P. R. China
2. Cancer Center, The First Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, P. R. China
3. Institute of Occupational Diseases, Zhejiang Academy of Medical Sciences, Hangzhou, Zhejiang, P. R. China
4. Sir Run Run Shaw Institute of Clinical Medicine, Zhejiang University, Hangzhou, Zhejiang, P. R. China