About the Authors

Lisa G. Smithers

lisa.smithers@adelaide.edu.au

Affiliation Discipline of Public Health, The University of Adelaide, Adelaide, South Australia, Australia

Rebecca K. Golley

Affiliation School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, South Australia, Australia

Murthy N. Mittinty

Affiliation Discipline of Public Health, The University of Adelaide, Adelaide, South Australia, Australia

Laima Brazionis

Affiliation Discipline of Public Health, The University of Adelaide, Adelaide, South Australia, Australia

Kate Northstone

Affiliation School of Social and Community Medicine, Bristol University, Bristol, England

Pauline Emmett

Affiliation School of Social and Community Medicine, Bristol University, Bristol, England

John W. Lynch

Affiliations Discipline of Public Health, The University of Adelaide, Adelaide, South Australia, Australia, School of Social and Community Medicine, Bristol University, Bristol, England

Competing Interests

The authors have read the journal's policy and have the following conflicts. KN and PE have received support from Danone and PE has received support from Pfizer and Plum Baby, who might have an interest in the submitted work. There are no patents, products in development or marketed products to declare. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials, as detailed online in the guide for authors.

Author Contributions

Conceived and designed the experiments: LGS RKG JWL. Analyzed the data: LGS. Wrote the paper: LGS RKG MNM LB KN PE JWL.