About the Authors

Lidy M. Pelsser

pelsser@adhdresearchcentre.nl

Affiliation ADHD Research Centre, Eindhoven, the Netherlands

Klaas Frankena

Affiliation Quantitative Veterinary Epidemiology group, Wageningen University & Research, Wageningen, the Netherlands

Jan Toorman

Affiliation Retired paediatrician, previously Catharina Hospital, Eindhoven, the Netherlands

Rob Rodrigues Pereira

Affiliation Medical Center Kinderplein, Rotterdam, the Netherlands

Competing Interests

LMP is franchiser of the restricted elimination diet (RED) protocol and has received honoraria for applying the RED protocol in the Netherlands. RRP and LMP received travel grants and honoraria for speaking or participations at meetings. RRP is a board member of ADHD in Practice, Impuls & Woortblind and Dutch ADHD Quality Standard. All other authors declare to have no competing interests. This does not alter our adherence to PLOS ONE policies on sharing data and materials.

Author Contributions

Conceptualization: LMP KF JT RRP. Data curation: KF. Formal analysis: KF LMP RRP. Investigation: LMP KF. Methodology: KF LMP. Visualization: KF. Writing – original draft: LMP KF. Writing – review & editing: LMP KF RRP JT.