About the Authors

Wei Wang

Affiliations Graduate School, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People's Republic of China, National Center for Clinical Laboratories, Beijing Hospital, Beijing, People's Republic of China

Jinming Li

ljm63hn@yahoo.com.cn

Affiliation National Center for Clinical Laboratories, Beijing Hospital, Beijing, People's Republic of China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JL. Performed the experiments: WW. Analyzed the data: WW. Contributed reagents/materials/analysis tools: JL. Wrote the paper: WW.