About the Authors

Tien-Huei Hsu

Affiliation Department of Microbiology and Immunology, University of Michigan, Ann Arbor, Michigan, United States of America

Katherine R. Spindler

krspin@umich.edu

Affiliation Department of Microbiology and Immunology, University of Michigan, Ann Arbor, Michigan, United States of America

Competing Interests

The authors have declared that no competing interests exist.