About the Authors

Euna Oh

Affiliation School of Public Health, University of Alberta, Edmonton, Alberta, Canada

Byeonghwa Jeon

bjeon@ualberta.ca

Affiliation School of Public Health, University of Alberta, Edmonton, Alberta, Canada

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: BJ. Performed the experiments: EO. Analyzed the data: EO BJ. Contributed reagents/materials/analysis tools: BJ. Wrote the paper: BJ.