About the Authors

Qiaoli Zhang

Affiliation Department of Pediatrics of Beijing Friendship Hospital, Capital Medical University, Beijing, P. R. China

Yingxue Ding

Affiliation Department of Pediatrics of Beijing Friendship Hospital, Capital Medical University, Beijing, P. R. China

Yanqing Yao

Affiliation Department of Pediatrics of Beijing Friendship Hospital, Capital Medical University, Beijing, P. R. China

Yang Yu

Affiliation Department of Pediatrics of Beijing Friendship Hospital, Capital Medical University, Beijing, P. R. China

Lijun Yang

ljy20082008@126.com (LY); cuihong6699@163.com (HC)

Affiliation Department of Pediatrics of Beijing Friendship Hospital, Capital Medical University, Beijing, P. R. China

Hong Cui

ljy20082008@126.com (LY); cuihong6699@163.com (HC)

Affiliation Department of Pediatrics of Beijing Friendship Hospital, Capital Medical University, Beijing, P. R. China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: LJY HC. Performed the experiments: QLZ YXD. Analyzed the data: LJY. Contributed reagents/materials/analysis tools: YQY YY. Wrote the manuscript: HC.