About the Authors

Tara Grinnage-Pulley

Affiliation Department of Epidemiology, College of Public Health, University of Iowa, Iowa City, Iowa, United States of America

Benjamin Scott

Affiliation Department of Epidemiology, College of Public Health, University of Iowa, Iowa City, Iowa, United States of America

Christine A. Petersen

christine-petersen@uiowa.edu

Affiliation Department of Epidemiology, College of Public Health, University of Iowa, Iowa City, Iowa, United States of America

Competing Interests

The authors have declared that no competing interests exist.