About the Authors

Xiaoqin Zhang

Affiliation Department of Anesthesia, Rui Jin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P.R. China

Honghai Zhang

Affiliations Department of Anesthesia, Rui Jin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P.R. China, Department of Anesthesia, Hangzhou First People's Hospital, Nanjing Medical University, Zhejiang, P.R. China

Haijun Shao

Affiliation Department of Anesthesia, Rui Jin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P.R. China

Qingsheng Xue

Affiliation Department of Anesthesia, Rui Jin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P.R. China

Buwei Yu

yu.buwei@yahoo.com

Affiliation Department of Anesthesia, Rui Jin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P.R. China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: BWY XQZ HHZ. Performed the experiments: XQZ HHZ HJS. Analyzed the data: XQZ HHZ QSX. Contributed reagents/materials/analysis tools: BWY XQZ HJS QSX. Wrote the paper: BWY XQZ.