About the Authors

Paul F. M. Krabbe

p.f.m.krabbe@umcg.nl

Affiliations University of Groningen, University Medical Center Groningen, Department of Epidemiology, Groningen, The Netherlands, Theta Research, Zeist, The Netherlands

Competing Interests

The author has declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: PK. Performed the experiments: PK. Analyzed the data: PK. Contributed reagents/materials/analysis tools: PK. Wrote the paper: PK. Theory and concept: PK.