About the Authors

Xiaowen Feng

Affiliation Key Laboratory of the Ministry of Education for Experimental Teratology and Department of Anatomy, School of Medicine, Shandong University, Jinan, Shandong, P. R. China

Nan Liang

Affiliation Department of Neurosurgery, Provincial Hospital of Shandong University, Jinan, Shandong, P. R. China

Dexiao Zhu

Affiliation Key Laboratory of the Ministry of Education for Experimental Teratology and Department of Anatomy, School of Medicine, Shandong University, Jinan, Shandong, P. R. China

Qing Gao

Affiliation Department of Histology and Embryology, School of Medicine, Shandong University, Jinan, Shandong, P. R. China

Lei Peng

Affiliation Key Laboratory of the Ministry of Education for Experimental Teratology and Department of Anatomy, School of Medicine, Shandong University, Jinan, Shandong, P. R. China

Haiman Dong

Affiliation Key Laboratory of the Ministry of Education for Experimental Teratology and Department of Anatomy, School of Medicine, Shandong University, Jinan, Shandong, P. R. China

Qingwei Yue

Affiliation Key Laboratory of the Ministry of Education for Experimental Teratology and Department of Anatomy, School of Medicine, Shandong University, Jinan, Shandong, P. R. China

Haili Liu

Affiliation Key Laboratory of the Ministry of Education for Experimental Teratology and Department of Anatomy, School of Medicine, Shandong University, Jinan, Shandong, P. R. China

Lihua Bao

Affiliation Key Laboratory of the Ministry of Education for Experimental Teratology and Department of Anatomy, School of Medicine, Shandong University, Jinan, Shandong, P. R. China

Jing Zhang

Affiliation Key Laboratory of the Ministry of Education for Experimental Teratology and Department of Anatomy, School of Medicine, Shandong University, Jinan, Shandong, P. R. China

Jing Hao

Affiliation Department of Histology and Embryology, School of Medicine, Shandong University, Jinan, Shandong, P. R. China

Yingmao Gao

Affiliation Department of Histology and Embryology, School of Medicine, Shandong University, Jinan, Shandong, P. R. China

Xuejie Yu

Affiliation School of public Health, Shandong University, Jinan, Shandong, P. R. China

Jinhao Sun

sunjinhao@sdu.edu.cn

Affiliation Key Laboratory of the Ministry of Education for Experimental Teratology and Department of Anatomy, School of Medicine, Shandong University, Jinan, Shandong, P. R. China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JS XF YG. Performed the experiments: XF NL DZ. Analyzed the data: XF QG LP HD QY. Contributed reagents/materials/analysis tools: XF HL LB JZ JH XY. Wrote the paper: JS XF.