About the Authors

Steven J. Siegel

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

Edwin Tamashiro

Affiliations Department of Microbiology, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America, Department of Ophthalmology, Otorhinolaryngology, and Head and Neck Surgery, Ribeirao Preto School of Medicine, University of Sao Paulo, Sao Paulo, Brazil

Jeffrey N. Weiser

weiser@mail.med.upenn.edu

Current address: Department of Microbiology, New York University School of Medicine New York, New York, United States of America

Affiliations Department of Microbiology, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America, Department of Pediatrics, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SJS JNW. Performed the experiments: SJS ET. Analyzed the data: SJS ET JNW. Wrote the paper: SJS JNW.