About the Authors

Susan Grass, Joseph W. St. Geme III
Department of Pediatrics, Duke University Medical Center, Durham, North Carolina, United States of America

Cheryl F. Lichti, R. Reid Townsend, Julia Gross
Department of Medicine Washington University School of Medicine, St. Louis, Missouri, United States of America

R. Reid Townsend
Department of Cell Biology and Physiology, Washington University School of Medicine, St. Louis, Missouri, United States of America

Joseph W. St. Geme III
Department of Molecular Genetics & Microbiology, Duke University Medical Center, Durham, North Carolina, United States of America

Corresponding Author

j.stgeme@duke.edu

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SG RRT JWSG. Performed the experiments: SG CFL JG JWSG. Analyzed the data: SG CFL RRT JG JWSG. Wrote the paper: CFL RRT JG JWSG.