Acknowledgements
We would like to thank Pooja Modi, Donald McNair, and Rebecca Hovatter for their contributions to their work in drawing CC masks. We are also sincerely grateful for the time volunteered by all participants.
Declaration of interest: The authors have no disclosures of interest to make regarding this work.
The authors alone are responsible for the content and writing of the paper.
Funding for this study was provided by NIH RO1-NS052514 (RCW) and Basic Radiological Sciences Award (RCW).