About the Authors

Mirjam E. J. van Beelen

Affiliation Department of Public Health, Erasmus University Medical Center, Rotterdam, The Netherlands

Tinneke M. J. Beirens

Affiliations Department of Public Health, Erasmus University Medical Center, Rotterdam, The Netherlands, Dutch Association for Youth Health Care Physicians, Utrecht, The Netherlands

Paul den Hertog

Affiliation Consumer Safety Institute, Amsterdam, The Netherlands

Eduard F. van Beeck

Affiliation Department of Public Health, Erasmus University Medical Center, Rotterdam, The Netherlands

Hein Raat

h.raat@erasmusmc.nl

Affiliation Department of Public Health, Erasmus University Medical Center, Rotterdam, The Netherlands

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: HR MEJB TMJB PH EFB. Performed the experiments: MEJB. Analyzed the data: MEJB TMJB. Contributed reagents/materials/analysis tools: MEJB TMJB. Wrote the paper: HR MEJB TMJB PH EFB.