About the Authors

Jamie R. Shuda

jshuda@sas.upenn.edu (JRS); farber@ciwemb.edu (SAR)

Affiliations Institute for Regenerative Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, United States of America, School of Education, Johns Hopkins University, Baltimore, Maryland, United States of America

Valerie G. Butler

Affiliation Department of Embryology, Carnegie Institution for Science, Baltimore, Maryland, United States of America

Robert Vary

Affiliation Department of Embryology, Carnegie Institution for Science, Baltimore, Maryland, United States of America

Steven A. Farber

jshuda@sas.upenn.edu (JRS); farber@ciwemb.edu (SAR)

Affiliations School of Education, Johns Hopkins University, Baltimore, Maryland, United States of America, Department of Embryology, Carnegie Institution for Science, Baltimore, Maryland, United States of America

Competing Interests

The authors have declared that no competing interests exist.