About the Authors
- Pia Hardelid
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Affiliation Centre for Paediatric Epidemiology and Biostatistics, University College London Institute of Child Health, London, United Kingdom
- Jonathan Davey
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Affiliation Centre for Paediatric Epidemiology and Biostatistics, University College London Institute of Child Health, London, United Kingdom
- Nirupa Dattani
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Affiliation Centre for Paediatric Epidemiology and Biostatistics, University College London Institute of Child Health, London, United Kingdom
- Ruth Gilbert
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* E-mail: r.gilbert@ucl.ac.uk
Affiliation Centre for Paediatric Epidemiology and Biostatistics, University College London Institute of Child Health, London, United Kingdom
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: RG PH ND JD. Analyzed the data: PH JD ND. Wrote the paper: PH RG. Critically reviewed the manuscript: RG PH JD ND.