About the Authors

Chang-yang Xing

Contributed equally to this work with: Chang-yang Xing, Tie-sheng Cao

Affiliation Department of Ultrasound Diagnostics, Tangdu Hospital, Fourth Military Medical University, Xi’an, China

Tie-sheng Cao

Contributed equally to this work with: Chang-yang Xing, Tie-sheng Cao

caotsxcy@yahoo.cn (TC); yuanlj@fmmu.edu.cn (LY)

Affiliation Department of Ultrasound Diagnostics, Tangdu Hospital, Fourth Military Medical University, Xi’an, China

Li-jun Yuan

caotsxcy@yahoo.cn (TC); yuanlj@fmmu.edu.cn (LY)

Affiliation Department of Ultrasound Diagnostics, Tangdu Hospital, Fourth Military Medical University, Xi’an, China

Zhen Wang

Affiliation Department of Ultrasound Diagnostics, Tangdu Hospital, Fourth Military Medical University, Xi’an, China

Kun Wang

Affiliation Department of Ultrasound Diagnostics, Tangdu Hospital, Fourth Military Medical University, Xi’an, China

Hua-ri Ren

Affiliation Department of Ultrasound Diagnostics, Tangdu Hospital, Fourth Military Medical University, Xi’an, China

Yong Yang

Affiliation Department of Ultrasound Diagnostics, Tangdu Hospital, Fourth Military Medical University, Xi’an, China

Yun-you Duan

Affiliation Department of Ultrasound Diagnostics, Tangdu Hospital, Fourth Military Medical University, Xi’an, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: TC CX. Performed the experiments: CX TC LY YY HR. Analyzed the data: CX TC LY YD ZW. Contributed reagents/materials/analysis tools: YD LY HR KW ZW. Wrote the paper: CX TC LY.