About the Authors
School of Life and Health Sciences, Aston University, Birmingham, United Kingdom
Russell Hall, Dudley Group Hospitals, Dudley, United Kingdom
The authors have declared that no competing interests exist.
Conceived and designed the experiments: ML HRG. Performed the experiments: ML. Analyzed the data: ML HRG. Contributed reagents/materials/analysis tools: HRG ARC. Wrote the paper: ML HRG.