About the Authors
Stowers Institute for Medical Research, Kansas City, Missouri, United States of America
Department of Physiology, University of Kansas Medical Center, Kansas City, Kansas, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: SEH WDG RSH. Performed the experiments: SEH WDG JLC ST KAC. Analyzed the data: SEH WDG RSH. Wrote the paper: SEH WDG RSH.