About the Authors

Frank Peinemann

pubmedprjournal@gmail.com

Affiliations University of Maastricht, School for Public Health and Primary Care, Maastricht, The Netherlands, Children's Hospital, University of Cologne, Cologne, Germany

Doreen Allen Tushabe

Affiliation University of Birmingham, Department of Public Health, Epidemiology & Biostatistics, Birmingham, United Kingdom

Jos Kleijnen

Affiliations University of Maastricht, School for Public Health and Primary Care, Maastricht, The Netherlands, Kleijnen Systematic Reviews Ltd, York, United Kingdom

Competing Interests

No authors have any competing interests. Employment by Kleijnen Systematic Reviews Ltd does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: FP JK. Performed the experiments: FP DAT. Analyzed the data: FP DAT. Contributed reagents/materials/analysis tools: FP. Wrote the manuscript: FP DAT JK.