About the Authors

Ingrid Kruizinga

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

Wilma Jansen

Affiliation Department of Youth Policy, Rotterdam Municipal Health Service (GGD Rotterdam-Rijnmond), Rotterdam, The Netherlands

Carolien L. de Haan

Affiliation Department of Youth Policy, Rotterdam Municipal Health Service (GGD Rotterdam-Rijnmond), 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: IK WJ HR. Performed the experiments: IK. Analyzed the data: IK. Contributed reagents/materials/analysis tools: CH. Wrote the paper: IK.