About the Authors

Marian F. MacDorman

Roles Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Resources, Software, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing

mmacdorman@gmail.com

Affiliation Maryland Population Research Center, University of Maryland, College Park, Maryland, United States of America

Marie Thoma

Roles Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Validation, Visualization, Writing – original draft, Writing – review & editing

Affiliation Department of Family Science, University of Maryland School of Public Health, College Park, Maryland, United States of America

Eugene Declercq

Roles Conceptualization, Formal analysis, Funding acquisition, Investigation, Methodology, Validation, Visualization, Writing – original draft, Writing – review & editing

Affiliation Department of Community Health Sciences, Boston University School of Public Health, Boston, Massachusetts, United States of America

Elizabeth A. Howell

Roles Formal analysis, Investigation, Methodology, Visualization, Writing – original draft, Writing – review & editing

Affiliation Department of Obstetrics and Gynecology, Perlman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America

Competing Interests

The authors have declared that no competing interests exist.