About the Authors

Jing Dong

Contributed equally to this work with: Jing Dong, Huan Xu

dongjing6@hotmail.com (JD); qd-zyj@163.com (Z-YJ)

Affiliations Physiology Department of Medical College, Qingdao University, Qingdao, China, Special Medicine Department of Medical College, Qingdao University, Qingdao, China

Huan Xu

Contributed equally to this work with: Jing Dong, Huan Xu

Affiliation Class 2, Grade 2009, Medical College, Qingdao University, Qingdao, China

Huan Xu

Affiliation Grade 2009, Medical College, Qingdao University, Qingdao, China

Peng-fei Wang

Affiliation Grade 2008, Medical College, Qingdao University, Qingdao, China

Gui-ju Cai

Affiliation Grade 2008, Medical College, Qingdao University, Qingdao, China

Hai-feng Song

Affiliation Grade 2009, Medical College, Qingdao University, Qingdao, China

Chang-chen Wang

Affiliation Grade 2009, Medical College, Qingdao University, Qingdao, China

Zhao-tong Dong

Affiliation Grade 2010, Medical College, Qingdao University, Qingdao, China

Yan-jiao Ju

Affiliation Grade 2010, Medical College, Qingdao University, Qingdao, China

Zheng-yao Jiang

dongjing6@hotmail.com (JD); qd-zyj@163.com (Z-YJ)

Affiliation Physiology Department of Medical College, Qingdao University, Qingdao, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JD. Performed the experiments: HX(b) HX(c) PW GC HS CW ZD YJ. Analyzed the data: HX(b). Contributed reagents/materials/analysis tools: ZJ. Wrote the paper: JD HX(b) PW.