About the Authors

Keith B Godfrey

To whom correspondence should be addressed. E-mail: aquilonis@earthlink.net

Affiliation Department of Opthamology and Visual Sciences, University of British Columbia, Vancouver, British Columbia, Canada

Nicholas V Swindale

Affiliation Department of Opthamology and Visual Sciences, University of British Columbia, Vancouver, British Columbia, Canada

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

KBG conceived and designed the experiments. KBG and NVS performed the experiments. KBG analyzed the data. KBG and NVS contributed reagents/materials/analysis tools. KBG and NVS wrote the paper.