About the Authors

Yang Wang

Affiliation Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China

Baoyan Liu

Affiliation China Academy of Chinese Medical Sciences, Beijing, China

Jinna Yu

Affiliation Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China

Jiani Wu

Affiliation Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China

Jing Wang

Affiliation Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China

Zhishun Liu

liuzhishun@yahoo.com.cn

Affiliation Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the trial: ZL. Contributed materials: BL. Performed the trial: JY J. Wu. Analyzed the data: J. Wang. Wrote the paper: YW.