About the Authors

Donghai Dai

donghai-dai@uiowa.edu

Affiliation Department of Obstetrics & Gynecology, University of Iowa, Iowa City, Iowa, United States of America

Brandon Beck

Affiliation Department of Obstetrics & Gynecology, University of Iowa, Iowa City, Iowa, United States of America

Xiaofang Wang

Affiliation Department of Obstetrics & Gynecology, University of Iowa, Iowa City, Iowa, United States of America

Cory Howk

Affiliation Department of Obstetrics & Gynecology, University of Iowa, Iowa City, Iowa, United States of America

Yi Li

Affiliation Department of Mathematics, University of Iowa, Iowa City, Iowa, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: DD. Performed the experiments: BB XW. Analyzed the data: DD. Contributed reagents/materials/analysis tools: BB. Wrote the paper: DD CH YL.