About the Authors

J. Whitehead

Affiliation Department of Pediatrics, School of Medicine, Northwestern University, Chicago, IL, United States of America

John Shaver

Affiliation Department of Health and Biological Sciences, School of Nursing, University of Michigan, Ann Arbor, Michigan, United States of America

Rob Stephenson

rbsteph@umich.edu

Affiliation Department of Health and Biological Sciences, School of Nursing, University of Michigan, Ann Arbor, Michigan, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: RS JW. Analyzed the data: JW RS JS. Wrote the paper: JW RS JS.