About the Authors

Kun Wang

Affiliation National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing, People's Republic of China

Chunshui Yu

Affiliation Department of Radiology, Xuanwu Hospital of Capital Medical University, Beijing, People's Republic of China

Lijuan Xu

Affiliation National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing, People's Republic of China

Wen Qin

Affiliation Department of Radiology, Xuanwu Hospital of Capital Medical University, Beijing, People's Republic of China

Kuncheng Li

Affiliation Department of Radiology, Xuanwu Hospital of Capital Medical University, Beijing, People's Republic of China

Lin Xu

Affiliation Laboratory of Learning and Memory, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, People's Republic of China

Tianzi Jiang

jiangtz@nlpr.ia.ac.cn

Affiliation National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing, People's Republic of China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: KW LX LX TJ. Performed the experiments: KW CY LX WQ KL. Analyzed the data: KW. Contributed reagents/materials/analysis tools: KW. Wrote the paper: KW CY LX LX TJ.