About the Authors
- John J. J. Bernstein
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Roles Data curation, Formal analysis, Investigation, Writing – review & editing
Affiliation Haverford High School, Haverford, Pennsylvania, United States of America
- Gerhard B. Holt
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Roles Conceptualization, Formal analysis, Methodology, Writing – review & editing
Affiliation Independent Scholar, Philadelphia, Pennsylvania, United States of America
- Joseph Bernstein
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Roles Conceptualization, Data curation, Formal analysis, Investigation, Writing – original draft
* E-mail: 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.