About the Authors

John J. J. Bernstein

Roles Data curation, Formal analysis, Investigation, Writing – review & editing

Affiliation Haverford High School, Haverford, Pennsylvania, United States of America

Gerhard B. Holt

Roles Conceptualization, Formal analysis, Methodology, Writing – review & editing

Affiliation Independent Scholar, Philadelphia, Pennsylvania, United States of America

Joseph Bernstein

Roles Conceptualization, Data curation, Formal analysis, Investigation, Writing – original draft

Joseph.Bernstein@uphs.upenn.edu

Affiliation University of Pennsylvania, Philadelphia, Pennsylvania, United States of America

Competing Interests

The authors have declared that no competing interests exist.