About the Authors

Marleen M. H. J. van Gelder

M.vanGelder@ebh.umcn.nl

Affiliation Department of Epidemiology, Biostatistics and HTA, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands

Nel Roeleveld

Affiliation Department of Epidemiology, Biostatistics and HTA, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands

Hedvig Nordeng

Affiliations School of Pharmacy, University of Oslo, Oslo, Norway, Division of Mental Health, Norwegian Institute of Public Health, Oslo, Norway

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MMHJvG NR HN. Analyzed the data: MMHJvG. Wrote the paper: MMHJvG. Interpretation of the data: MMHJvG NR HN. Contributed to the writing of the paper: MMHJvG NR HN. Acquisition of the data: HN.